Daily Sunspot Evaluation
Observation Sheet Monday, 8 April 1974
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)
- 19
- Relative number (R)
- 59
- Observer
- FA
- Reading
- all checks consistent
- File
- 19740408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | -5 | 08E | 214 | |||
| 2 | B – 10 | -13 | 39E | 183 | |||
| 3 | B – 4 | 11 | 40W | 262 | |||
| 4 | J – 3 | 14 | 35W | 257 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.