Daily Sunspot Evaluation
Observation Sheet Monday, 3 April 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)
- 32
- Relative number (R)
- 92
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720403.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 11 | -7 | 19E | 186 | |||
| 2 | ? – 1 | -8 | 80E | 123 | |||
| 3 | C – 5 | -8 | 06E | 197 | |||
| 4 | A – 3 | -15 | 27W | 230 | |||
| 5 | A – 3 | -6 | 06W | 209 | |||
| 6 | B – 9 | 1 | 05W | 208 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.