Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 May 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)
- 7
- Number of spots (f)
- 89
- Relative number (R)
- 159
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720510.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 7 | 44E | 31 | |||
| 2 | D – 9 | -7 | 67E | 8 | |||
| 3 | E – 25 | -15 | 19W | 94 | |||
| 4 | A – 1 | -24 | 29W | 104 | |||
| 5 | A – 9 | 6 | 16W | 91 | |||
| 6 | E – 39 | 19 | 17W | 92 | |||
| 7 | A – 2 | 14 | 07W | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.