An active day is when any amount of data is received from that station.
| Identifier | Jun 06 | Jul 06 | Aug 06 | Sep 06 | Oct 06 | Nov 06 | Dec 06 | Jan 07 | Feb 07 | Mar 07 | Apr 07 | May 07 | Jun 07 | Jul 07 | Aug 07 | Sep 07 | Oct 07 | Nov 07 | Dec 07 | Jan 08 | Feb 08 | Mar 08 | Apr 08 | May 08 |
| CT1FZC-11 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 28 | 31 | 30 | 31 | 30 | 30 | 31 | 28 | 31 | 30 | 31 | 31 | 17 | 21 | 0 | 0 |
| CW1784 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 30 | 24 | 14 | 21 | 27 | 24 | 0 | 2 | 0 | 0 | 0 | 0 | 19 | 24 | 18 | 28 | 30 |
| CW2726 | 30 | 30 | 31 | 9 | 20 | 21 | 30 | 29 | 27 | 13 | 21 | 0 | 0 | 0 | 0 | 0 | 28 | 28 | 19 | 23 | 25 | 20 | 0 | 0 |
| CW2732 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 29 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 27 | 31 |
| CW2798 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 29 | 23 | 31 | 30 | 31 | 29 | 31 | 30 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW2939 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW3220 | 30 | 31 | 31 | 30 | 27 | 30 | 31 | 13 | 15 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 29 | 31 | 29 | 28 |
| CW3253 | 29 | 31 | 31 | 30 | 11 | 9 | 7 | 0 | 0 | 1 | 4 | 0 | 2 | 4 | 30 | 20 | 13 | 1 | 0 | 2 | 4 | 0 | 0 | 0 |
| CW3467 | 30 | 31 | 31 | 29 | 31 | 30 | 31 | 17 | 2 | 0 | 0 | 0 | 0 | 0 | 15 | 4 | 0 | 0 | 9 | 30 | 29 | 31 | 26 | 31 |
| CW3583 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW3847 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW4030 | 30 | 31 | 31 | 30 | 24 | 29 | 31 | 31 | 28 | 29 | 30 | 31 | 30 | 31 | 31 | 30 | 29 | 30 | 31 | 31 | 29 | 30 | 12 | 3 |
| CW4171 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW4214 | 30 | 31 | 31 | 30 | 24 | 17 | 29 | 31 | 28 | 27 | 29 | 27 | 30 | 31 | 31 | 28 | 30 | 28 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW4320 | 30 | 31 | 31 | 30 | 31 | 30 | 26 | 19 | 22 | 29 | 30 | 29 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW5089 | 30 | 26 | 31 | 29 | 27 | 30 | 31 | 31 | 27 | 26 | 0 | 29 | 30 | 31 | 15 | 15 | 19 | 30 | 21 | 0 | 0 | 0 | 0 | 0 |
| CW5495 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 31 | 30 | 31 |
| CW5532 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 28 | 25 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 29 | 31 | 30 | 31 |
| CW5711 | 23 | 19 | 31 | 28 | 31 | 30 | 31 | 30 | 28 | 31 | 30 | 31 | 30 | 22 | 31 | 30 | 30 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW6020 | 24 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW6059 | 19 | 29 | 1 | 0 | 19 | 30 | 31 | 6 | 26 | 14 | 4 | 25 | 27 | 30 | 5 | 30 | 31 | 30 | 31 | 31 | 25 | 31 | 30 | 31 |
| CW6157 | 0 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 23 | 30 | 30 | 31 | 30 | 28 | 31 | 29 | 31 | 30 | 31 |
| CW6422 | 0 | 0 | 9 | 29 | 25 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 22 | 14 | 12 | 18 | 19 | 15 | 23 | 24 | 26 | 7 | 2 |
| CW6654 | 0 | 0 | 0 | 0 | 23 | 17 | 17 | 14 | 17 | 13 | 6 | 3 | 5 | 0 | 0 | 6 | 0 | 0 | 24 | 29 | 18 | 0 | 0 | 0 |
| CW6759 | 0 | 0 | 0 | 0 | 1 | 27 | 30 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 28 | 8 | 25 |
| CW6764 | 0 | 0 | 0 | 0 | 0 | 30 | 28 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW6993 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 23 | 26 | 30 | 31 | 31 | 29 | 31 | 13 | 0 |
| CW7051 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 27 | 28 | 31 | 29 | 30 | 30 | 31 | 16 | 2 | 27 | 28 | 25 | 31 | 29 | 31 | 29 | 30 |
| CW7191 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 9 | 31 | 30 | 31 | 30 | 11 | 8 | 30 | 30 | 22 | 23 | 31 | 29 | 31 | 17 | 10 |
| CW7217 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 29 | 31 | 30 | 31 |
| CW7218 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW7220 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 23 | 25 | 29 | 27 | 29 | 31 | 31 | 30 | 31 | 30 | 30 | 29 | 29 | 31 | 30 | 7 |
| CW7222 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW7615 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 29 | 31 | 30 | 31 |
| CW7764 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 27 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW7858 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 31 | 29 | 27 | 27 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 30 |
| CW7942 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 19 | 29 | 22 | 25 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| CW8145 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 24 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 30 |
| CW8593 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 30 | 31 | 30 | 26 | 31 | 29 | 26 | 27 | 28 |
| CW8736 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 8 | 8 | 0 | 0 | 0 | 0 | 0 | 0 |
| CW9066 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 31 | 15 | 31 | 30 | 20 |
| CW9189 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 17 | 13 | 5 | 10 | 0 |
| CW9276 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 2 | 0 | 0 | 0 | 0 |
| CW9301 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 25 | 23 | 30 | 29 | 30 |
| CW9605 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 27 | 31 | 30 | 31 |
| CW9671 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 29 | 31 | 29 | 30 |
| CW9875 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| CW9880 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 1 | 0 | 0 |
| CW9914 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 31 | 30 | 31 |
| CW9930 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 27 | 10 |
| CW9934 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 20 | 30 | 29 |
| DW0083 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 30 | 31 |
| DW0113 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 11 | 31 |
| DW0144 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |
| DW0336 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 31 |
| DW0362 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 31 |
| DW0468 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 31 |
| DW0470 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 31 |
| DW0537 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| EA1QW | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 28 | 31 | 30 | 30 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 28 | 31 | 30 | 31 |
| EA1WS | 28 | 28 | 26 | 25 | 20 | 21 | 28 | 30 | 28 | 31 | 30 | 31 | 30 | 31 | 22 | 30 | 30 | 30 | 31 | 27 | 29 | 30 | 30 | 29 |
| EA3AGQ | 7 | 11 | 0 | 20 | 31 | 30 | 31 | 21 | 3 | 2 | 0 | 0 | 0 | 6 | 6 | 16 | 10 | 6 | 5 | 17 | 0 | 1 | 8 | 3 |
| EA3AGQ-1 | 30 | 31 | 31 | 30 | 31 | 28 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| EA3AUC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 27 | 28 | 31 | 28 | 18 | 29 | 30 | 31 | 30 | 29 | 30 | 11 | 2 |
| EA3AYP-1 | 30 | 31 | 31 | 4 | 0 | 0 | 0 | 6 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 29 | 0 |
| EA3CNO-1 | 27 | 31 | 31 | 30 | 30 | 30 | 28 | 31 | 28 | 31 | 30 | 30 | 20 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| EA3DGI-1 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 31 | 27 | 31 | 30 | 31 | 30 | 31 | 23 | 30 | 30 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| EA3EDD | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| EA3FAJ-1 | 30 | 27 | 29 | 21 | 30 | 30 | 31 | 31 | 28 | 29 | 20 | 31 | 29 | 27 | 19 | 24 | 31 | 30 | 30 | 22 | 28 | 31 | 30 | 23 |
| EA3ZD-15 | 30 | 31 | 30 | 30 | 31 | 30 | 28 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 30 | 30 | 31 | 8 | 0 | 0 | 0 | 0 | 0 | 0 |
| EA5DFV | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 29 | 28 | 31 | 30 | 31 | 30 | 11 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
| EA7AZH | 30 | 31 | 31 | 30 | 31 | 28 | 28 | 28 | 28 | 28 | 30 | 31 | 30 | 31 | 31 | 18 | 9 | 30 | 31 | 31 | 23 | 31 | 30 | 31 |
| EA8AJC-9 | 24 | 31 | 31 | 29 | 31 | 28 | 30 | 29 | 28 | 29 | 30 | 29 | 23 | 31 | 31 | 30 | 26 | 25 | 31 | 24 | 29 | 31 | 10 | 1 |
| EB3DMC-1 | 30 | 31 | 28 | 4 | 23 | 30 | 22 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 26 |
| EB3EBM-1 | 0 | 0 | 0 | 0 | 4 | 3 | 9 | 16 | 27 | 31 | 30 | 13 | 0 | 0 | 3 | 0 | 0 | 6 | 31 | 31 | 29 | 31 | 29 | 24 |
| EB3GGU | 30 | 28 | 28 | 30 | 31 | 30 | 30 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 31 |
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