Daily Sunspot Evaluation
Observation Sheet Thursday, 6 April 1978
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)
- 8
- Number of spots (f)
- 50
- Relative number (R)
- 130
- Observer
- FA
- Reading
- all checks consistent
- File
- 19780406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 28 | 21 | 11E | 32 | 11E | ||
| 2 | A – 1 | 15 | 06E | 37 | 06E | ||
| 3 | A – 3 | 17 | 48E | 355 | 48E | ||
| 4 | J – 1 | 18 | 63E | 340 | 63E | ||
| 5 | J – 2 | -28 | 68E | 335 | 68E | ||
| 6 | C – 6 | -26 | 39E | 4 | 39E | ||
| 7 | A – 2 | -16 | 26W | 69 | 26W | ||
| 8 | C – 7 | 21 | 33W | 76 | 33W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.