Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 September 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)
- 15
- Number of spots (f)
- 102
- Relative number (R)
- 252
- Observer
- GT
- Reading
- all checks consistent
- File
- 19810922.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 6 | 15 | 78W | 343 | 81W | 14 | |
| 2 | HAX – 1 | 19 | 76W | 341 | 79W | 25 | |
| 3 | DAI – 9 | 20 | 62W | 327 | 65W | 10 | |
| 4 | AXX – 5 | 14 | 43W | 308 | 46W | 25 | |
| 5 | HSX – 2 | 10 | 28W | 293 | 31W | 2 | |
| 6 | DAE – 27 | 10 | 07W | 272 | 10W | 65 | |
| 7 | DAO – 21 | 11 | 06E | 259 | 03E | 4 | |
| 8 | AXX – 3 | 20 | 37E | 228 | 84E | 34 | |
| 9 | AXX – 3 | 16 | 60E | 205 | 57E | 2 | |
| 10 | BXO – 8 | -9 | 23W | 288 | 26W | 4 | |
| 11 | AXX – 5 | -13 | 16W | 281 | 19W | 2 | |
| 12 | OHO – 8 | -8 | 12E | 253 | 09E | 6 | |
| 13 | AXX – 1 | -8 | 56E | 209 | 53E | - | |
| 14 | HAX – 2 | -10 | 68E | 197 | 65E | 3 | |
| 15 | ? – 1 | -15 | 79E | 186 | 76E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.