Max/min are the highest and lowest readings
for the month
Dt is the date of the reading
| Month | 2001 | 2002 | 2003 | 2004 | 2005 | |||||
| Max/min | Dt | Max/min | Dt | Max/min | Dt | Max/min | Dt | Max/min | Dt | |
| Jan | 1028 | 20 | 1038 | 1 | 1039 | 24 | 1031 | 18 | 1039 | 3 |
| 983 | 2 | 981 | 23 | 982 | 21 | 990 | 8 | 999 | 18 | |
| Feb | 1044 | 17 | 1037 | 15 | 1038 | 17 | 1039 | 9 | 1042 | 2 |
| 990 | 4 | 990 | 26 | 998 | 3 | 1005 | 26 | 1011 | 12 | |
| March | 1020 | 31 | 1035 | 24 | 1040 | 16 | 1038 | 1 | 1038 | 9 |
| 995 | 28 | 990 | 18 | 1011 | 1 | 1004 | 12 | 1002 | 2 | |
| April | 1033 | 12 | 1035 | 21 | 1036 | 5 | 1029 | 12 | 1036 | 11 |
| 1000 | 7 | 999 | 30 | 998 | 28 | 983 | 18 | 992 | 18 | |
| May | 1031 | 8 | 1029 | 31 | 1029 | 7 | 1033 | 16 | 1030 | 31 |
| 1000 | 17 | 993 | 22 | 10000 | 2 | 982 | 5 | 1005 | 22 | |
| June | 1030 | 18 | 1031 | 25 | 1027 | 13 | 1035 | 13 | 1041 | 8 |
| 1003 | 16 | 1003 | 5 | 1005 | 30 | 996 | 23 | 1009 | 30 | |
| July | 1031 | 1 | 1030 | 14 | 1026 | 12 | 1030 | 24 | 1037 | 11 |
| 996 | 17 | 996 | 3 | 1002 | 1 | 1006 | 8 | 1003 | 24 | |
| August | 1030 | 10 | 1038 | 26 | 1026 | 7 | 1025 | 26 | 1032 | 4 |
| 1003 | 19 | 1004 | 9 | 1008 | 29 | 998 | 19 | 1007 | 25 | |
| Sept | 1026 | 17 | 1034 | 1 | 1034 | 24 | 1036 | 8 | 1033 | 18 |
| 999 | 30 | 1009 | 9 | 1006 | 22 | 1002 | 14 | 1001 | 25 | |
| Oct | 1037 | 31 | 1033 | 4 | 1028 | 25 | 1027 | 31 | 1036 | 3 |
| 987 | 7 | 986 | 22 | 976 | 30 | 988 | 20 | 996 | 21 | |
| Nov | 1042 | 2 | 1024 | 30 | 1028 | 6 | 1042 | 14 | 1043 | 23 |
| 1004 | 8 | 970 | 14 | 990 | 26 | 1009 | 18 | 995 | 25 | |
| Dec | 1043 | 8 | 1033 | 6 | 1034 | 22 | 1035 | 5 | 1046 | 13 |
| 1004 | 29 | 991 | 27 | 992 | 27 | 989 | 17 | 967 | 2 | |