Daily Sunspot Evaluation
Observation Sheet Monday, 19 April 1976
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)
- 8
- Relative number (R)
- 38
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19760419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 1 | 5 | 09E | 110 ⚠ | 06E | ||
| 2 | B – 6 | -10 | 24E | 125 | 21E | ||
| 3 | D – 1 | 3 | 61W | 210 | 64W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.