Daily Sunspot Evaluation
Observation Sheet Monday, 2 April 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)
- 58
- Relative number (R)
- 98
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730402.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 44 | -5 | 00 | 79 | 52 | ||
| 2 | H – 7 | 12 | 40E | 39 | 59 | ||
| 3 | H – 1 | 8 | 68W | 147 | 50 | ||
| 4 | C – 6 | 9 | 58W | 137 | 55 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.