Daily Sunspot Evaluation
Observation Sheet Sunday, 7 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)
- 6
- Number of spots (f)
- 81
- Relative number (R)
- 141
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720507.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 11 | 18 | 22E | 91 | |||
| 2 | A – 1 | 11 | 16E | 97 | |||
| 3 | B – 12 | 8 | 21E | 92 | |||
| 4 | E – 52 | -16 | 21E | 92 | |||
| 5 | A – 1 | -24 | 10E | 103 | |||
| 6 | A – 4 | -6 | 14W | 127 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.