Daily Sunspot Evaluation
Observation Sheet Friday, 30 June 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)
- 9
- Number of spots (f)
- 70
- Relative number (R)
- 160
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780630.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 17 | 16E | 345 | 13E | ||
| 2 | B – 8 | 17 | 23E | 338 | 20E | ||
| 3 | A – 2 | 20 | 31E | 330 | 28E | ||
| 4 | ? – 2 | 20 | 84E | 277 | 81E | ||
| 5 | C – 5 | -15 | 47E | 314 | 44E | ||
| 6 | E – 21 | -20 | 48W | 49 | 51W | ||
| 7 | C – 11 | 17 | 64W | 65 | 67W | ||
| 8 | B – 2 | 25 | 55W | 56 | 58W | ||
| 9 | E – 17 | 24 | 32W | 33 | 35W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.