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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