Daily Sunspot Evaluation
Observation Sheet Monday, 7 May 1973
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)
- 4
- Number of spots (f)
- 82
- Relative number (R)
- 122
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730507.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 15 | 08°E | 328 | 73 | ||
| 2 | A – 1 | -13 | 34°E | 302 | 79 | ||
| 3 | E – 76 | -13 | 00 | 336 | 72 | ||
| 4 | A – 1 | -13 | 43°W | 19 | 81 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.