Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 July 1972
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)
- 9
- Number of spots (f)
- 61
- Relative number (R)
- 151
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720726.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 17 | 7 | 00 | 135 | |||
| 2 | A – 3 | 9 | 28E | 107 | |||
| 3 | J – 1 | 4 | 17E | 118 | |||
| 4 | A – 7 | -5 | 31E | 106 | |||
| 5 | B – 3 | -15 | 65E | 70 | |||
| 6 | E – 19 | -15 | 48E | 84 | |||
| 7 | A – 2 | -6 | 14W | 149 | |||
| 8 | A – 1 | -14 | 31W | 166 | |||
| 9 | B – 8 | -10 | 49W | 184 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.