AvailabilityPlease select a month from the table below.
Counts of parameter records by month | 1991 | 1 | 220 | 220 | 220 |
| 1990 | 12 | 240 | 240 | 240 |
| 1990 | 11 | 228 | 228 | 228 |
| 1990 | 10 | 242 | 242 | 242 |
| 1990 | 9 | 231 | 231 | 231 |
| 1990 | 8 | 245 | 245 | 245 |
| 1990 | 7 | 242 | 242 | 242 |
| 1990 | 6 | 234 | 234 | 234 |
| 1990 | 5 | 242 | 242 | 242 |
| 1990 | 4 | 223 | 223 | 223 |
| 1990 | 3 | 242 | 242 | 242 |
| 1990 | 2 | 113 | 113 | 113 |
| 1990 | 1 | 3 | 3 | 3 |
| 1989 | 11 | 2 | 2 | 2 |
| 1989 | 10 | 2 | 2 | 2 |
| 1989 | 4 | 49 | 49 | 49 |
| 1989 | 3 | 12 | 12 | 12 |
| 1989 | 2 | 206 | 206 | 206 |
| 1989 | 1 | 240 | 240 | 240 |
| 1988 | 12 | 233 | 233 | 233 |
| 1988 | 11 | 227 | 227 | 227 |
| 1988 | 10 | 243 | 243 | 243 |
| 1988 | 9 | 234 | 234 | 234 |
| 1988 | 8 | 229 | 229 | 229 |
| 1988 | 7 | 239 | 239 | 239 |
| 1988 | 6 | 230 | 230 | 230 |
| 1988 | 5 | 232 | 232 | 232 |
| 1988 | 4 | 230 | 230 | 230 |
| 1988 | 3 | 228 | 228 | 228 |
| 1988 | 2 | 219 | 219 | 219 |
| 1988 | 1 | 237 | 237 | 237 |
| 1987 | 12 | 238 | 238 | 238 |
| 1987 | 11 | 224 | 224 | 224 |
| 1987 | 10 | 189 | 189 | 189 |
| 1987 | 9 | 203 | 203 | 203 |
| 1987 | 8 | 110 | 110 | 110 |
| 1987 | 7 | 149 | 149 | 149 |
| 1987 | 6 | 75 | 75 | 75 |
| 1987 | 5 | 127 | 127 | 127 |
| 1987 | 4 | 51 | 51 | 51 |
| 1987 | 3 | 8 | 8 | 8 |
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