Date	pH
20 Dec 	4.57
25-26 Dec 	5.62
30 Dec-1Jan	4.12
9 Jan	5.29
18-19 Jan	4.64
21 Jan	4.31
26-27 Jan	4.30
28 Jan	4.39
6-7 Feb	4.45
9-11 Feb	5.67
16-17 Feb	4.39
23-24 Feb	4.52
24-25 Feb	4.26
28 Feb-1Mar	4.26
8 Mar	4.40
9 Mar	5.78
15-16 Mar	4.73
21 Mar	4.56
29-31 Mar	5.08
3-4 Apr	4.41
7-9 Apr	4.12
14 Apr	5.51
25-26 Apr	4.82
11-12 May	4.63
17 May	4.29
23 May	4.60