Daily Sunspot Evaluation
Observation Sheet Thursday, 15 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)
- 8
- Number of spots (f)
- 31
- Relative number (R)
- 111
- Observer
- HM
- Reading
- all checks consistent
- File
- 19780615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 18 | 37E | 163 | 34E | ||
| 2 | J – 3 | 19 | 46E | 154 | 43E | ||
| 3 | A – 1 | 16 | 39E | 161 | 36E | ||
| 4 | B – 3 | 15 | 67W | 267 | 70W | ||
| 5 | D – 17 | 15 | 44W | 244 | 47W | ||
| 6 | A – 1 | 11 | 23W | 223 | 26W | ||
| 7 | A – 2 | 17 | 25W | 225 | 28W | ||
| 8 | J – 2 | 18 | 16W | 216 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.