Daily Sunspot Evaluation
Observation Sheet Monday, 1 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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720501.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -2 | 39E | 153 | |||
| 2 | D – 5 | -6 | 68E | 124 | |||
| 3 | J – 1 | 17 | 62W | 254 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.