Daily Sunspot Evaluation
Observation Sheet Friday, 2 October 1981
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 18
- Number of spots (f)
- 90
- Relative number (R)
- 270
- Observer
- HM
- Reading
- all checks consistent
- File
- 19811002.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKO – 7 | 8 | 58W | 190 | 60W | 11 | |
| 2 | DAI – 10 | 7 | 26W | 158 | 28W | 6 | |
| 3 | HSX – 3 | 17 | 14W | 146 | 16W | 2 | |
| 4 | DAI – 7 | 15 | 01E | 131 | 01W | 7 | |
| 5 | DAI – 14 | 12 | 18E | 114 | 16E | 5 | |
| 6 | AXX – 5 | 15 | 22E | 110 | 20E | - | |
| 7 | DHO – 10 | 9 | 66E | 66 | 64E | 7 | |
| 8 | AXX – 1 | -9 | 66W | 198 | 68W | - | |
| 9 | HAX – 1 | -14 | 54W | 186 | 56W | - | |
| 10 | AXX – 1 | -14 | 45W | 177 | 47W | - | |
| 11 | HAX – 4 | -5 | 25W | 157 | 27W | 4 | |
| 12 | AXX – 1 | -5 | 07W | 139 | 09W | - | |
| 13 | AXX – 4 | -9 | 05W | 137 | 07W | 1.5 | |
| 14 | CAO – 6 | -16 | 08E | 124 | 06E | 4 | |
| 15 | HAX – 6 | -17 | 24E | 108 | 22E | 2 | |
| 16 | AXX – 2 | -27 | 35E | 97 | 33E | - | |
| 17 | AXX – 2 | -6 | 38E | 94 | 36E | - | |
| 18 | CSI – 6 | -7 | 61E | 71 | 59E | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.