Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 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)
- 7
- Number of spots (f)
- 171
- Relative number (R)
- 241
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 23 | 70E | 318 | 68E | ||
| 2 | J – 1 | 20 | 56E | 332 | 53E | ||
| 3 | D – 6 | 16 | 48E | 340 | 45E | ||
| 4 | E – 75 | -20 | 19W | 47 | 22W | ||
| 5 | E – 46 | 16 | 37W | 65 | 40W | ||
| 6 | C – 9 | 26 | 28W | 57 | 32W | ||
| 7 | E – 33 | 22 | 05W | 33 | 08W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.