Cumulative Data for Adders

 

Year

First Sighting

Air Temp. (C)

Grass Temp. (C)

First Slough

1990

5 February

13 14

8 April

1991

23 February

14 17

19 April

1992

23 February

13 15

22 April

1993

1 7 February

10.7 12.5

16 April

1994

10 February

10 15

18 April

1995

12 February

11.4 11

10 April

1996

16 February

12.2 15

24 April

1997

15 February

8.6 11

8 April

1998

1 1 February

13.6 12.5

17 April

1999

1 6 February

8 9

16 April

2000

1 9 February

6.3 12.5

7 April

2001

7 February

10 11.5

17 April

2002

11 February

13.5 16

9 April

2003

23 February

11 23.8

31 March

2004

4 March

11 17.5

19 April

 
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