Seawater Data April 2020

Also available from DFO here, along with data from other sites on the West Coast.

April -2020:

Date Salinity ppt. deg C LAT. LONG.
2020-04-01 31.8 7.7 48.2979 -123.5316
2020-04-02 31.7 7.8 48.2979 -123.5316
2020-04-03 31.9 7.7 48.2979 -123.5316
2020-04-04 32 7.7 48.2979 -123.5316
2020-04-05 31.7 8 48.2979 -123.5316
2020-04-06 32 8.3 48.2979 -123.5316
2020-04-07 32.6 8 48.2979 -123.5316
2020-04-08 32.3 8.5 48.2979 -123.5316
2020-04-09 32.2 8.3 48.2979 -123.5316
2020-04-10 32.3 8.3 48.2979 -123.5316
2020-04-11 32.2 8.3 48.2979 -123.5316
2020-04-12 32 8.4 48.2979 -123.5316
2020-04-13 32 8.3 48.2979 -123.5316
2020-04-14 31.7 8.3 48.2979 -123.5316
2020-04-15 31.5 9.2 48.2979 -123.5316
2020-04-16 31.4 8.9 48.2979 -123.5316
2020-04-17 31.5 8.8 48.2979 -123.5316
2020-04-18 31.4 8.9 48.2979 -123.5316
2020-04-19 31.6 9.1 48.2979 -123.5316
2020-04-20 31.7 9 48.2979 -123.5316
2020-04-21 31.7 9.1 48.2979 -123.5316
2020-04-22 31.7 8.8 48.2979 -123.5316
2020-04-23 31.8 9.1 48.2979 -123.5316
2020-04-24 31.9 9 48.2979 -123.5316
2020-04-25 31.8 9.3 48.2979 -123.5316
2020-04-26 32.2 9.1 48.2979 -123.5316
2020-04-27 32.1 9.1 48.2979 -123.5316
2020-04-28 32.3 8.8 48.2979 -123.5316
2020-04-29 32.1 8.9 48.2979 -123.5316
2020-04-30 32.2 9.2 48.2979 -123.5316

Ixoreus naevius; Varied Thrush- The Race Rocks Taxonomy

 

Ecoguardian at Race Rocks,  Nick Townley , spotted this first specimen recorded occurance of Ixoreus naevius  Varied Thrush at Race Rocks on February 22 2020

At this time of year the migranting birds are starting to show up. Their flyway is from the Olympic Penninsula , 10 Km across the Strait of Juan de Fuca , and the Race Rocks archipelago is the first landfall that they can rest on.   This record is the 20th migrating songbird species that has been photographed at Race Rocks over the past 20 years. . About another 20 species of migrating seabirds also use Race Rocks as a migratory stopover in the spring and fall .

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Turdidae
Genus: Ixoreus
Bonaparte, 1854
Species:I. naevius
Binomial name
Ixoreus naevius
Gmelin, 1789

 

Other Members of the Class Aves at Race Rocks.
taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams. Nick Townley , Ecoguardian

Template for Census at Race Rocks.

Ecoguardians Use this–copy and paste  and modify as necessary

Template: Observer: ———————Location: Race Rocks –Date:

California Sealion 00 Stellers
(Northen sealion)
00 Harbour seal 00 ELephant
Seal
00 other 00
River Otter 00 Orca (resident) 00 Orca (transient) 00 Humpback 00 other 00
Glaucous-
winged gull
00 Black
Oystercatcher
00 Pigeon
guillemot
00 Canada
Gose
00 Gr.White
fronted goose
00
Dbl Crest
Cormorant
00 Brant’s Cormorant 00 Pelagic Cormorant 00 Black
Turnstone
00 other 00
Thayer’s
gull
00 California
gull
00 Mew
Gull
00 Western
Gull
00 Bonaparte’s
Gull
00
Heermann’s
Gull
00 Gulls
unident
00 other 00 00 00
Dunlin 00 Sanderling 00 whimbrel 00 surfbird 00 Killdeer 00
Bald Eagle
adult
00 bald Eagle
juvenile
00 Peregrine
falcon
00 other 00 other 00
Savannah
sparrow
00 Fox
sparrow
00 Song
Sparrow
00 American
Pipit
00 Golden
Crowned
sparrow
00

 

 

Western Gull 4–

Heerman’s Gull 7–

Fox Sparrow —

Savannah Sparrow —

Trevor Anderson by Marianne Scott

Trevor aAnderson, Air Force Veteran, lighthouse keeper, offshore sailor. an article in Pacific Yachting magazine of December. 

See the pdf here: Anderson

 COASTAL CHARACTERS BY MARIANNE SCOTT

TREVOR ANDERSON

Air Force veteran, lighthouse keeper, offshore sailor

Only a few Second World War veterans remain with us today—Trevor Anderson is one of them. At age 99, he vividly recalls his war experiences, serving as a Morse code radio operator and doubling as gunner. “When the war broke out in 1939, I tried to enlist and finally made it in 1941,” he told me. He received his radio operator and gunner training in Calgary and Saskatchewan and eventually made it to England. “I was required to signal 16 words a minute in Morse code,” he recalls,“but it bumped up to 20 words in the UK. I’ve built a life-sized model Morse communication setup in the basement.”

After time in Scotland, he and 700 others boarded the SS Pasteur and spent two months sailing to the Cape of Good Hope, then to Aden.“Somebody goofed, ”Trevor says.“We were supposed to go to Burma but were dumped in Cairo.We had no notion we were going to North Africa.” He was attached to the British Royal Air Force with about 100 other Canadians, a few Australians and New Zealanders, but was scuttled all around the fighting between the Allies under Bernard Montgomery and the Germans under Erwin Rommel. “We moved continually,” he says.“It was a shemozzle.Tents, dust, sand, fleas and crickets. They assigned me to the American forces, who didn’t use Morse code. No keys in the planes to start with.Very insecure.” “The Americans wanted to fly at night,” he continued.“But their exhaust trails lit up like Vegas. So they changed their tactics.”

He spent 18 months in the desert, variously stationed in Egypt, Libya, Tunisia and later, Sicily. Crouched in a small gun turret attached to the belly of American B-25 bombers, he handled two 50-calibre machine guns and the Morse code key.

On his fourth mission, January 2, 1943, his plane was hit and ditched in the Mediterranean while he signaled their location. Somehow, he escaped from the belly turret through a dinner plate-sized window and survived with six others in a dinghy for 30 hours.

Altogether, Trevor flew 55 missions— while the usual limit for gunners was 25-30 missions. During his 55th bombing run, an inexperienced colonel wanting flight pay missed the Italian target twice and then got lost. Trevor’s Morse code requests for help got them back to Sicily. The next morning, he visited the colonel. “Sir,” he said, “I’ve had enough.” (He tells me this story in his modest, understated way. Today, he’d be called a hero.) After flying to Cairo, he found the Canadians were clueless about what to do with him, but they released him from the combat area; Trevor went home to Victoria via West Africa, Brazil, Curacao, Miami and Ottawa.

WHILE IN NORTH Africa, Trevor, like all military men, thirsted for mail from home. Among the letter writers was Florence, aka Flo. “Our fathers were part of a small lending circle in Victoria and she wrote me regularly,” says Trevor, “mind you, it wasn’t romantic. But sometime during my desert sojourn, I asked her to marry me. She said yes.”

They married in 1944 after Flo finished her Victoria College studies; the marriage lasted 73 years. “When Hitler was defeated, we were released and every soldier was looking for work,” he recalled. “So after a few months, I went back into the Air Force and was posted in the Queen Charlotte Islands and Ottawa, teaching flight simulation for pilots.” Later, he and his growing family of two boys and two girls were stationed around Canada while Trevor flew all over the world in Dakotas and North Stars operating the radio while supplying the bases along the Alaska Highway and transporting dignitaries. He also served as radar fighter controller on several bases, retiring from the Air Force in 1960.

THE NEXT PHASES of Trevor’s life revolved around the sea. In 1961, he took the job of assistant lighthouse keeper and he, Flo and their four kids relocated to Lennard Island, near Tofino. Their government-issued home was on the verge of dereliction, cold and without running water. Electricity came on at night when the lighthouse operated and the Andersons turned night into day, with the children studying and Flo doing her household chores. In her autobiography Lighthouse Chronicles, Flo explained the senior keeper was a vicious drunk. Perhaps because Trevor had trained for lighthouse keeper duties, he’d become a threat to those without formal training; suddenly, the Department of Transport informed him he was fired. The noxious senior keeper had written a batch of letters reporting Trevor performed his duties badly.

Trevor journeyed to Victoria to protest his dismissal. After a lengthy investigation, he was reinstated, then promoted and appointed senior keeper at Barrett Rock. The family became rock hoppers, relocating to McInnes Island in Milbanke Sound, then to stormy Green Island, the northernmost-staffed lighthouse in Canada. They called it an “igloo” as the incessant tempests created rotund— and treacherous—ice pillows on the beaches. The Andersons lived through two ice-sprayed winters until July 1966, when they transferred to Race Rocks, which became a true home. They stayed 16 years.

Besides staffing the lights, the Andersons worked with Pearson College students and their marine biology teacher Garry Fletcher (featured in PY October 2019) to investigate the nine Race Rocks isles, their unique ecology, the surrounding high-current waters and various forms of alternative electricity production. They helped Garry to establish Race Rocks as an Ecological Reserve—areas set aside to preserve exceptional natural features. At some time, Trev and Flo decided they needed a sailboat and vowed to build one themselves, despite their lack of boatbuilding knowledge and skills. They spent much time pouring over Chappelle’s Boatbuilding and reading books penned by such sailors as the Hiscocks. They also met renowned boat designer Bill Garden. Over seven years, they built their 56-foot ketch (42 feet without bowsprit and davits), Wawa the Wayward Goose, launching her in 1982. “I knew I’d figure out all the intricacies eventually,” Trev says. “Bill Garden was enthralled.” They learned sailing by doing, first cruising the Gulf Islands, and then circumnavigating Vancouver Island. In July 1985, they headed offshore to Hawaii, New Zealand, Tonga, Samoa, Fanning Island and Pago Pago. After returning to Victoria in 1987, they continued to live on Wawa for another eight years before returning to life on solid land.

Flo died in  2017, at 93 years of age. Having had her companionship for nearly three-quarters of a century, Trevor misses her enormously. “Being alone is hard,” he says. He continues to live in the 100-plus year-old house in Victoria’s James Bay (Flo’s parents once owned it). Although he spent more than 20 years in military service, Canada denied him a pension, as “the service wasn’t continuous.” Consequently, he doesn’t have much use for Remembrance Days or other veteran recognitions.

How does one live until 99 and still be upright? “My philosophy of life is to take things as they come,” Trevor says. “Don’t do what you can’t do. I don’t think much about it, I’m just here. I’ve survived an airplane crash, a car crash and a mangled foot. I don’t drink, quit smoking more than 50 years ago. I just continue to live, day after day.”

Setophaga townsendi: Townsend’s warbler- The Race Rocks taxonomy

Our first observation  of this species at Race Rocks was made by Laas Parnell, Ecological Reserve Warden on Dec 16, 2019.

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Parulidae
Genus: Setophaga
Species:
S. townsendi
Common name Townsend’s warbler

 

and this reference  from The Cornell Lab website:

Backyard Tips

On the Pacific coast in winter, Townsend’s Warblers often investigate backyard feeders, most regularly when temperatures drop below freezing, to eat energy-rich foods such as mealworms, peanut butter, and suet.

  • Cool Facts
    • On the wintering ground in Mexico, the Townsend’s Warbler feeds extensively on the sugary excretions (known as “honeydew”) of scale insects. It’s such a good food resource that Townsend’s Warblers set up and defend territories around trees infested with the insects.
    • Townsend’s Warbler was first noted to science by John Kirk Townsend, an American naturalist who collected a male specimen near the mouth of the Columbia River in what is now Oregon, on April 16, 1835. His discovery followed a long cross-continental trek. Townsend was accompanied on this expedition by English botanist Thomas Nuttall. Dozens of western plants and animals bear the names of these early naturalists.

 

Other Members of the Class Aves at Race Rocks.
taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams. Dec, 11 2019- Laas Parnell

Larus californicus: California Gull

In March 2010 Pam Birley captured this gull with the remote camera. She wrote “I saw a California gull recently and attach pics.  You don’t seem to have any in the taxonomy pages.   It’s not a rare gull but this maybe the first I have seen at RR.” Indeed it is one of those gulls which has fallen through the cracks so this is a rather late addition to our taxonomy.

This adult plumage is reached after 4 years. Note the black tip on the bill and the yellow legs which distinguish it from the Western Gull.
Domain Eukarya
Kingdom Animalia
Phylum Chordata
Sub-Phylum Vertebrata
Class Aves
Order Charadriiformes
Family Laridae
Genus Larus
Species californicus
Common Name: California Gull

Other Members of the Class Aves at Race Rocks.
taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams. March 10 2010- Pam Birley

Larus hyperboreus: Glaucous Gull — The Race Rocks Taxonomy

A photo of the rare second year Glaucous Gull on the right, Western Gull on the left. Photo March 8, 2009 by RyanThis is only the third record for this area in the Rocky Point Bird Observatory records.

Probable identification of the white gull on the left is the immature Glaucous gull. The gull on the right is an immature Glaucous-winged gull (photo 21st Dec 2005..camera 5 by Pam Birley)

To the left: This is a tentative identification. If it is correct, according to David Allinson of the Rocky Point Bird Observatory, ” this probably represents only the second record for Glaucous Gull (a 1st winter bird) for Rocky Point’s checklist (and a first for Race Rocks too!). The big head, the large bubble-gum pink dark-tipped bill, and white head and body (at least what can be seen) seems to be diagnostic.
However, to be cautious I should only say probable as we cannot see all of the bird.”

 

To the left: This is a tentative identification. If it is correct, according to David Allinson of the Rocky Point Bird Observatory, ” this probably represents only the second record for Glaucous Gull (a 1st winter bird) for Rocky Point’s checklist (and a first for Race Rocks too!). The big head, the large bubble-gum pink dark-tipped bill, and white head and body (at least what can be seen) seems to be diagnostic.
However, to be cautious I should only say probable as we cannot see all of the bird.”
This is one of the largest species of gull. It can be up to 66-81 cm. in length. It nests on the tundra, and the range is circumpolar.It moves South in winter but only small numbers reach as far as the Pacific Northwest.”

Domain Eukarya
Kingdom Animalia
Phylum Chordata
Sub-Phylum Vertebrata
Class Aves
Order Charadriiformes
Family Laridae
Genus Larus
Species hyperboreus
Common Name:
Glaucous Gull

 

Other Members of the Class Aves at Race Rocks.
taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.
October 2006 Pam Birley

Bird List and Census by D.Donnecke

Daniel Donnecke has contributed his images and counts from a visit to race Rocks on October 30 to ebird.org

https://ebird.org/checklist/S61055064

 

Archive of Salinity Recorded at Race Rocks 1926 to Present

Year   Jan  Feb March  April  May  June  July  Aug  Sept Oct Nov Dec

1936 ——- ——- ——— ——— ——— ——— ——- ——- ———– 31.36  31.65  31.54
1937  31.66  31.76  31.55  31.36  31.26  31.10  30.94  31.13  31.18  31.29  30.88  30.82
1938  30.60  30.70  30.80  31.21  31.11  31.18  30.87  31.34  31.24  31.65  31.54  31.41
1939  31.07  31.18  31.44  31.53  31.31  31.05  31.03  30.78  31.34  31.77 —— – 30.93
1940  30.76  30.78  30.60  30.92  30.65  30.60 —— —– —– ——- ——- ——- ——-
1941 —— —— —— —— —— 31.49  31.50  31.25  31.49  31.62  31.45  31.31  30.97
1942  31.18  31.00  31.44  31.58  31.56  31.62  31.25  31.11  31.32  31.80  31.73  31.46
1943  31.43  31.33  31.69  31.28  31.53  31.51  31.34  31.12  31.20  31.46  31.53  31.60
1944  31.60  31.57  31.80  31.91  31.80  32.10  31.81  31.89  31.77  31.68  31.70  31.49
1945  31.37  31.21  31.51  31.58  31.78  31.65  31.60  31.54  31.67  31.82  31.88  31.56
1946  31.12  31.30  31.19  31.43  31.39  31.06  30.76  30.95  31.44  31.54  31.80  31.26
1947  31.69  31.24  31.53  31.72  31.63  31.28  31.43  31.08  31.48  31.66  31.24  31.34
1948  31.07  31.42  31.40  31.53  31.32  30.83  30.46  31.13  31.12  31.19  31.45  31.03
1949  31.40  31.56  31.34  31.59  31.37  31.29  31.88  31.61  31.45  31.60  31.50  31.08
1950  31.14  31.12  30.79  31.01  31.34  31.31  30.95  31.06  31.20  31.05  30.91  30.34
1951  30.21  30.22  30.69  31.34  31.54  31.13  31.37  31.27  31.61  31.67  31.53  31.20
1952  31.39  31.00  31.33  31.60  31.65  31.30  31.12  31.47  31.48  31.44  31.79  31.58
1953  30.79  30.52  31.38  31.45  31.44  31.21  31.20  31.00  31.14  31.37  31.26  30.63
1954  30.47  30.56  30.76  31.06  31.41  31.41  30.74  30.76  30.67  30.87  30.73  30.49
1955  30.67  30.77  31.37  31.41  31.57  31.27  31.27  30.89  30.94  31.39  30.78  30.79
1956  30.50  31.10  31.02  31.21  31.27  30.85  30.56  31.15  31.33  31.28  31.14  31.01
1957  31.22  31.30  31.17  31.28  31.44  31.20  31.15  31.35  31.24  31.12  31.35  31.29
1958  31.05  30.82  30.89  31.01  31.01  30.78  30.53  31.04  31.22  31.05  30.96  30.86
1959  30.75  30.66  30.99  31.04  31.20  31.19  30.57  30.83  31.14  30.99  31.07  30.91
1960  30.99  30.85  31.16  31.14  31.13  31.06  30.66  31.02  31.04  31.21  31.15  30.84
1961  30.63  30.65  30.43  30.75  30.99  30.52  30.60  31.08  31.42  31.56  31.52  31.35
1962  31.22  31.29  31.49  31.66  31.44  31.52  31.28  31.31  31.07  31.48  31.13  30.74
1963  30.75  30.98  31.04  31.08  31.19  31.26  31.16  31.18  31.36  31.33  31.00  30.79
1964  30.67  30.70  31.15  31.42  31.68  31.49  30.85  30.75  31.14  31.22  31.31  31.16
1965  30.47  30.86  31.21  31.61  31.51  31.24  31.65  31.55  31.40  31.77  31.25  30.98
1966  30.83  30.87  31.03  31.13  31.35  31.45  31.35  31.14  31.42  31.50  31.62  31.07
1967  30.86  30.75  30.94  30.98  31.36  31.08  30.56  30.92  31.05  31.26  30.83  31.15
1968  30.93  30.64  30.69  30.85  31.28  31.02  30.64  30.96  31.09  31.23  31.01  30.67
1969  30.55  30.75  30.94  31.08  31.06  30.83  30.86  31.20  31.07  31.12  31.42  31.15
1970  31.00  30.74  31.05  31.50  31.71  31.24  31.19  31.65  31.79  32.10  31.84  31.42
1971  31.25  31.04  31.10  30.91  31.06  31.12  30.81  30.59  30.73  31.21  31.57  31.05
1972  30.94  30.89  30.05  30.27  30.69  30.33  29.82  30.40  30.84  31.37  31.80  31.53
1973  31.25  31.09  31.45  31.66  31.94  31.77  31.30  31.62  31.83  31.95  31.64  31.12
1974  31.14  30.92  30.97  31.21  31.55  31.06  30.92  30.53  31.32  31.75  32.11  31.81
1975  31.75  31.61  31.59  32.00  32.14  32.17  31.82  31.69  31.69  32.12  31.42  30.91
1976  30.85  31.07  31.08  31.34  31.56  31.65  31.51  31.34  30.72  30.72  31.13  31.26
1977  31.20  31.40  30.86  31.59  31.46  31.24  31.54  30.97  31.31  31.67  31.52  30.73
1978  30.75  30.67  30.73  30.91  31.29  31.29  31.15  31.53  31.20  31.18  31.25  31.69
1979  31.44  31.24  31.41  31.60  31.56  31.59  31.45  31.63  31.52  31.45  31.45  31.50
1980  31.07  31.48  31.38  31.71  31.71  32.01  31.92  31.78  31.93  31.94  32.06  31.75
1981  31.15  31.41  31.16  31.62  31.88  31.90  32.15  32.25  32.29  32.03  31.61  31.25
1982  31.20  31.08  30.77  31.07  31.55  31.71  31.57  31.29  31.33  31.42  31.21  30.85
1983  30.87  30.57  30.45  30.81  30.93  31.03  31.10  31.01  31.08  31.27  31.06  30.58
1984  30.46  30.54  30.46  30.87  31.35  31.34  31.11  31.46  31.35  31.27  31.02  31.08
1985  31.18  31.21  31.81  31.63  31.93  31.60  31.57  31.87  32.05  31.96  31.45  31.72
1986  31.54  31.16  30.94  31.27  31.64  31.25  31.36  31.17  31.67  31.80  31.82  31.50
1987  30.98  31.02  31.03  31.29  31.43  31.54  31.22  31.67  31.83  31.72  31.87  31.44
1988  31.34  31.40  31.61  31.77  31.70  31.67  31.73  31.83  31.78  31.90  31.59  31.41
1989  31.44  31.42  31.46  31.39  31.89  31.99  31.23  32.47  31.81  32.55  32.12  31.71
1990  31.80  31.54  31.37  31.57  31.76  31.37  31.81  31.21  31.29  31.84  31.43  30.56
1991  30.99  30.95  30.92  30.87  31.60  30.85  30.98  31.26  31.07  31.21  31.46  31.17
1992  30.96  30.51  30.75  31.12  30.90  31.00  30.92  30.56  30.88  31.12  30.91  30.52
1993  30.62  30.35  30.51  30.83  30.71  30.21  30.50  30.76  30.78  30.97  31.10  30.85
1994  30.84  30.64  30.73  31.78  31.53  31.85  31.04  31.34  31.22  31.44  31.57  31.29
1995  30.83  30.76  30.79  30.82  31.02  31.09  30.82  31.23  31.32  31.55  31.25  30.40
1996  30.26  30.20  30.36  30.71  30.84  31.04  30.44  30.88  31.18  31.33  31.27  30.76
1997  30.53  30.41  30.73  30.64  30.43  30.58  30.34  29.90  30.74  30.58  30.49  30.52
1998  30.62  30.39  30.50  30.57  31.08  30.66  30.89  30.92  31.04  31.34  31.20  30.79
1999  30.58  30.32  30.58  30.68  30.73  30.72  30.24  30.29  30.06  30.80  31.26  30.71
2000  30.82  30.80  30.91  31.17  31.07  30.90  30.55  30.70  30.78  30.96  31.25  31.40
2001  31.37  31.19  31.67  31.82  31.79  31.81  31.42  31.37  31.32  31.61  31.49  31.07
2002  30.84  30.81  31.17  31.35  31.41  31.31  30.82  30.76  31.28  31.38  31.75  31.43
2003  31.01  31.05  30.91  30.73  31.17  30.80  31.16  31.21  31.45  31.69  31.05  31.09
2004  30.92  30.71  30.99  31.15  31.25  31.38  31.15  31.38  31.48  31.15  31.17  31.11
2005  30.92  30.58  31.05  31.12  31.11  31.15  30.83  30.83  31.16  31.41  31.17  31.21
2006  30.80  30.23  31.19  31.21  31.08  31.09  30.81  31.00  31.48  31.54  31.15  30.98
2007  30.65  30.80  30.84  30.83  30.82  30.88  30.65  30.48  30.79  31.23  31.09  31.10
2008  30.76  30.86  31.06  31.20  31.50  31.19  31.31  31.30  31.13  31.53  31.23  31.53
2009  31.25  31.52  31.43  30.04  30.50  31.31  31.23  31.39  30.97  31.32  31.27  30.90
2010  30.95  30.84  31.04  30.98  31.32  31.00  30.62  31.01  31.23  31.26  31.47  31.28
2011  30.57  30.92  30.85  30.75  30.76  30.75  30.34  30.46  30.86  30.99  31.47  31.20
2012  31.30  31.31  31.06  30.84  30.69  31.12  30.56  30.39  30.59  31.10  30.92  30.54
2013  30.54  31.10  31.27  31.27  31.42  31.09  30.26  31.09  31.00  30.97  31.29  31.45
2014  31.49  31.43  31.01  30.89  31.06  30.54  30.47  30.42  31.00  31.25  30.53  30.39
2015  29.99  30.34  30.47  30.48  30.90  30.77  31.11  31.78  31.46  31.62  31.62  31.36
2016  31.31  30.91  30.74  30.82  30.94  30.88  30.91  30.88  31.66  31.87  31.45  31.62
2017  31.59  31.34  31.31  31.19  31.17  30.99  30.99  31.33  31.67  32.01  31.83  31.39
2018  31.35  31.14  31.30  30.96  31.22  30.72  29.93  30.37  30.93  31.10  31.12  30.96
2019  30.67 ——-  30.85  ——-  ——-   31.25  31.78  31.93 ——  – —— – —– —
Year   -Jan   — Feb    -Mar   -Apr    -May    -Jun  – Jul   -Aug  – Sep  – Oct  –  Nov  –  Dec