Daily Sunspot Evaluation
Observation Sheet Saturday, 21 October 1978
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)
- 11
- Number of spots (f)
- 121
- Relative number (R)
- 231
- Observer
- GT
- Reading
- all checks consistent
- File
- 19781021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 16 | 13E | 294 | 11E | ||
| 2 | D – 1 | 33 | 39E | 270 | 35E | ||
| 3 | E – 34 | 28 | 44E | 263 | 42E | ||
| 4 | B – 6 | 15 | 67E | 240 | 65E | ||
| 5 | H – 7 | -20 | 35E | 274 | 31E | ||
| 6 | C – 7 | -17 | 01E | 306 | 01W | ||
| 7 | D – 19 | -28 | 00 | 307 | 02W | ||
| 8 | E – 23 | -23 | 60W | 7 | 62W | ||
| 9 | C – 6 | 17 | 19W | 326 | 21W | ||
| 10 | D – 1 | 27 | 61W | 8 | 63W | ||
| 11 | D – 3 | 30 | 10W | 317 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.