Daily Sunspot Evaluation
Observation Sheet Tuesday, 30 July 1974
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)
- 6
- Number of spots (f)
- 26
- Relative number (R)
- 86
- Observer
- FA
- Reading
- all checks consistent
- File
- 19740730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -12 | 13E | 155 | |||
| 2 | J – 6 | -15 | 01E | 167 | |||
| 3 | A – 1 | -12 | 01W | 169 | |||
| 4 | B – 7 | -10 | 06W | 174 | |||
| 5 | A – 2 | -20 | 28W | 196 | |||
| 6 | B – 9 | -9 | 43W | 211 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.