An active day is when any amount of data is received from that station.
| Identifier | May 06 | 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 |
| AD4BL | 29 | 24 | 28 | 22 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 26 | 31 | 30 | 31 | 31 | 30 | 16 | 30 | 31 | 31 | 29 | 28 | 30 |
| BMSA2 | 0 | 0 | 1 | 3 | 30 | 31 | 30 | 30 | 29 | 25 | 24 | 30 | 29 | 29 | 13 | 26 | 20 | 24 | 30 | 31 | 31 | 29 | 27 | 11 |
| CDFA2 | 0 | 3 | 24 | 31 | 15 | 17 | 27 | 23 | 14 | 21 | 18 | 22 | 16 | 15 | 21 | 13 | 14 | 20 | 17 | 18 | 23 | 10 | 17 | 10 |
| CDSA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 12 | 18 | 11 | 19 | 28 | 17 | 22 | 22 | 16 | 22 | 17 | 15 | 18 | 8 | 0 | 1 |
| CDTA2 | 0 | 9 | 31 | 26 | 28 | 31 | 30 | 23 | 22 | 27 | 14 | 17 | 22 | 10 | 16 | 15 | 8 | 19 | 9 | 22 | 9 | 4 | 12 | 4 |
| CLGA2 | 31 | 30 | 31 | 31 | 25 | 28 | 26 | 30 | 28 | 28 | 18 | 15 | 23 | 15 | 7 | 31 | 30 | 27 | 28 | 29 | 27 | 28 | 13 | 20 |
| CNRA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 21 | 29 | 26 | 30 | 28 | 29 | 31 | 30 |
| CW0394 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 31 | 28 | 29 | 30 | 25 | 28 | 13 | 29 | 30 | 29 | 29 | 31 | 31 | 29 | 31 | 11 |
| CW0650 | 15 | 29 | 25 | 26 | 30 | 31 | 30 | 28 | 31 | 28 | 31 | 30 | 31 | 26 | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 26 | 31 | 26 |
| CW0804 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW1074 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW1480 | 19 | 30 | 31 | 28 | 30 | 28 | 30 | 29 | 31 | 27 | 18 | 30 | 31 | 30 | 31 | 31 | 24 | 31 | 30 | 31 | 31 | 27 | 31 | 30 |
| CW1514 | 3 | 4 | 6 | 18 | 10 | 19 | 27 | 16 | 23 | 4 | 0 | 10 | 21 | 5 | 4 | 0 | 2 | 2 | 0 | 3 | 10 | 6 | 6 | 4 |
| CW3017 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW3084 | 26 | 24 | 10 | 28 | 30 | 28 | 30 | 30 | 27 | 11 | 31 | 30 | 25 | 29 | 22 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW3281 | 31 | 30 | 31 | 31 | 25 | 28 | 29 | 30 | 29 | 28 | 29 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 26 | 31 | 28 | 26 | 31 | 30 |
| CW3684 | 30 | 30 | 22 | 20 | 29 | 29 | 30 | 30 | 28 | 28 | 27 | 30 | 29 | 29 | 30 | 29 | 29 | 31 | 29 | 23 | 29 | 28 | 31 | 30 |
| CW4027 | 30 | 27 | 31 | 31 | 30 | 27 | 29 | 27 | 31 | 28 | 26 | 29 | 28 | 28 | 31 | 31 | 30 | 28 | 30 | 31 | 31 | 29 | 30 | 11 |
| CW4419 | 19 | 30 | 31 | 28 | 30 | 28 | 30 | 30 | 31 | 27 | 18 | 30 | 31 | 30 | 31 | 31 | 24 | 31 | 30 | 31 | 31 | 27 | 31 | 30 |
| CW4522 | 25 | 20 | 30 | 31 | 30 | 21 | 11 | 13 | 23 | 22 | 31 | 26 | 30 | 28 | 31 | 31 | 24 | 31 | 29 | 28 | 31 | 28 | 28 | 29 |
| CW4591 | 31 | 28 | 31 | 29 | 30 | 31 | 30 | 30 | 31 | 18 | 29 | 30 | 29 | 29 | 31 | 31 | 30 | 29 | 30 | 31 | 31 | 29 | 31 | 11 |
| CW4623 | 31 | 22 | 29 | 23 | 22 | 28 | 30 | 28 | 20 | 0 | 22 | 30 | 28 | 29 | 23 | 16 | 1 | 23 | 28 | 23 | 3 | 1 | 0 | 0 |
| CW4652 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 28 | 23 |
| CW4713 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW5203 | 31 | 30 | 31 | 25 | 30 | 31 | 30 | 31 | 30 | 21 | 0 | 12 | 1 | 0 | 17 | 11 | 0 | 0 | 20 | 28 | 31 | 29 | 31 | 30 |
| CW5208 | 30 | 18 | 23 | 31 | 29 | 31 | 30 | 31 | 31 | 23 | 5 | 2 | 7 | 3 | 2 | 4 | 5 | 2 | 2 | 2 | 3 | 2 | 1 | 0 |
| CW5281 | 31 | 25 | 22 | 23 | 30 | 31 | 30 | 31 | 2 | 0 | 0 | 29 | 30 | 14 | 26 | 29 | 30 | 30 | 30 | 25 | 30 | 16 | 5 | 20 |
| CW5338 | 24 | 30 | 23 | 29 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 30 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW5435 | 12 | 19 | 22 | 3 | 0 | 10 | 28 | 29 | 29 | 26 | 27 | 28 | 21 | 0 | 30 | 3 | 0 | 0 | 0 | 7 | 19 | 28 | 12 | 12 |
| CW5523 | 31 | 30 | 31 | 25 | 30 | 31 | 30 | 30 | 28 | 28 | 29 | 30 | 29 | 29 | 31 | 31 | 30 | 28 | 30 | 26 | 31 | 29 | 31 | 11 |
| CW5666 | 31 | 24 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 28 | 31 | 30 | 31 | 27 | 31 | 30 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW5876 | 0 | 26 | 18 | 25 | 30 | 18 | 29 | 31 | 25 | 20 | 29 | 29 | 31 | 18 | 4 | 17 | 30 | 31 | 14 | 12 | 27 | 26 | 26 | 0 |
| CW6065 | 0 | 15 | 31 | 31 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 30 | 31 | 24 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CW6122 | 0 | 4 | 31 | 31 | 30 | 27 | 30 | 30 | 31 | 11 | 13 | 30 | 29 | 29 | 31 | 23 | 30 | 29 | 29 | 31 | 31 | 29 | 31 | 11 |
| CW6400 | 0 | 0 | 0 | 12 | 29 | 31 | 30 | 29 | 29 | 22 | 31 | 30 | 31 | 30 | 31 | 29 | 29 | 30 | 30 | 30 | 27 | 28 | 29 | 28 |
| CW6739 | 0 | 0 | 0 | 0 | 0 | 4 | 30 | 31 | 30 | 26 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 26 | 28 | 29 | 29 | 29 | 31 | 30 |
| CW7446 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 28 | 31 | 30 | 31 | 30 | 23 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| CW8253 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 26 | 31 | 30 |
| CW8584 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 27 | 31 | 15 | 30 | 29 | 19 | 24 | 28 |
| CW8873 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 28 | 30 | 31 | 29 | 25 | 30 |
| CW9287 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 19 | 29 | 3 | 0 |
| CW9316 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 30 | 29 | 31 | 30 |
| DIOA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| DJSA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 12 | 28 | 12 | 30 | 31 | 30 | 31 | 31 | 18 | 30 | 30 | 31 | 31 | 25 | 31 | 30 |
| DW0100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 |
| DW0141 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 30 |
| ELMA2 | 0 | 0 | 0 | 7 | 20 | 30 | 27 | 30 | 24 | 19 | 29 | 30 | 22 | 13 | 0 | 7 | 24 | 29 | 5 | 0 | 17 | 29 | 30 | 11 |
| FAOA2 | 0 | 23 | 31 | 31 | 30 | 31 | 30 | 29 | 30 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 31 | 31 | 29 | 31 | 30 |
| FBSA2 | 0 | 0 | 0 | 17 | 6 | 18 | 20 | 12 | 9 | 28 | 31 | 20 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 29 | 1 | 28 |
| GLVA2 | 0 | 0 | 0 | 16 | 23 | 17 | 28 | 12 | 24 | 28 | 24 | 28 | 29 | 19 | 0 | 28 | 29 | 27 | 30 | 31 | 31 | 26 | 22 | 9 |
| GMBA2 | 0 | 25 | 30 | 31 | 30 | 21 | 19 | 11 | 2 | 22 | 16 | 18 | 19 | 29 | 31 | 4 | 29 | 13 | 12 | 17 | 15 | 17 | 9 | 3 |
| JMTA2 | 0 | 3 | 25 | 30 | 27 | 22 | 17 | 24 | 8 | 22 | 25 | 14 | 25 | 21 | 21 | 11 | 24 | 31 | 20 | 21 | 16 | 10 | 17 | 19 |
| KL1SF-7 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30 | 28 | 31 | 24 | 31 | 30 | 31 | 31 | 30 | 24 | 29 | 31 | 31 | 29 | 24 | 30 |
| KL1YC | 28 | 27 | 31 | 29 | 30 | 31 | 30 | 30 | 29 | 28 | 29 | 30 | 29 | 29 | 31 | 29 | 28 | 29 | 29 | 31 | 31 | 29 | 26 | 11 |
| KL8DX-7 | 31 | 30 | 31 | 31 | 30 | 30 | 29 | 30 | 27 | 28 | 29 | 30 | 29 | 29 | 31 | 31 | 30 | 29 | 30 | 31 | 31 | 29 | 31 | 26 |
| KYKA2 | 0 | 0 | 0 | 14 | 28 | 16 | 16 | 30 | 27 | 20 | 20 | 21 | 18 | 16 | 31 | 29 | 27 | 9 | 13 | 20 | 15 | 15 | 1 | 0 |
| LDTA2 | 16 | 15 | 13 | 20 | 5 | 19 | 21 | 10 | 8 | 20 | 16 | 12 | 20 | 21 | 20 | 22 | 15 | 22 | 14 | 10 | 13 | 13 | 15 | 15 |
| MARA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 30 | 31 | 30 | 31 | 21 | 28 | 31 | 30 |
| MDTA2 | 0 | 17 | 29 | 28 | 23 | 31 | 30 | 30 | 22 | 15 | 0 | 0 | 23 | 28 | 21 | 22 | 19 | 19 | 3 | 6 | 17 | 2 | 17 | 13 |
| MLKA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MTCA2 | 7 | 23 | 31 | 19 | 0 | 0 | 8 | 7 | 7 | 3 | 1 | 11 | 8 | 6 | 6 | 20 | 6 | 12 | 0 | 5 | 3 | 8 | 14 | 9 |
| SAGA2 | 0 | 0 | 0 | 11 | 28 | 28 | 24 | 13 | 3 | 1 | 13 | 16 | 21 | 24 | 17 | 11 | 16 | 17 | 8 | 18 | 5 | 0 | 0 | 0 |
| SAVA2 | 0 | 1 | 0 | 1 | 18 | 28 | 30 | 21 | 26 | 28 | 29 | 30 | 28 | 29 | 29 | 18 | 30 | 29 | 30 | 31 | 31 | 27 | 30 | 11 |
| SBBA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 29 | 29 | 31 | 31 | 30 | 29 | 30 | 31 | 31 | 29 | 0 | 0 |
| SEVA2 | 15 | 29 | 27 | 31 | 19 | 27 | 30 | 31 | 13 | 22 | 28 | 26 | 23 | 20 | 16 | 13 | 27 | 21 | 19 | 22 | 22 | 28 | 22 | 23 |
| SHSA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 29 | 28 | 27 | 30 | 13 | 0 | 6 | 31 | 27 | 29 | 30 | 30 | 3 | 0 | 0 | 0 |
| SKKA2 | 0 | 0 | 1 | 16 | 28 | 31 | 30 | 30 | 29 | 28 | 29 | 30 | 29 | 29 | 31 | 31 | 30 | 17 | 0 | 0 | 0 | 0 | 0 | 0 |
| SMKA2 | 0 | 0 | 0 | 0 | 0 | 5 | 20 | 10 | 20 | 19 | 14 | 30 | 22 | 0 | 0 | 13 | 28 | 13 | 16 | 5 | 0 | 0 | 0 | 0 |
| TLLA2 | 0 | 28 | 31 | 30 | 24 | 28 | 27 | 30 | 29 | 28 | 27 | 29 | 27 | 29 | 31 | 29 | 28 | 29 | 30 | 25 | 31 | 25 | 21 | 10 |
| UNKA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 30 | 18 | 0 | 0 | 0 | 2 | 3 | 0 | 0 | 1 | 9 | 0 | 0 |
| WL7ZY | 31 | 30 | 31 | 31 | 30 | 31 | 26 | 31 | 31 | 28 | 31 | 30 | 31 | 16 | 30 | 31 | 28 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
| WL7ZY-6 | 31 | 30 | 31 | 31 | 29 | 31 | 30 | 27 | 30 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 24 | 30 | 31 | 31 | 29 | 31 | 30 |
| WLSA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| WMSA2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| WODA2 | 0 | 0 | 0 | 0 | 0 | 13 | 30 | 31 | 31 | 28 | 28 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 29 | 31 | 30 |
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