Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 October 1977
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)
- 5
- Number of spots (f)
- 18
- Relative number (R)
- 68
- Observer
- GA
- Reading
- all checks consistent
- File
- 19771004.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 21 | 08E | 301 | 06E | ||
| 2 | B – 4 | -23 | 11E | 298 | 09E | ||
| 3 | ? – 1 | -21 | 02E | 307 | 00 | ||
| 4 | H – 6 | 15 | 37W | 346 | 39W | ||
| 5 | D – 6 | 31 | 30W | 339 | 32W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.