Daily Sunspot Evaluation
Observation Sheet Saturday, 17 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)
- 48
- Relative number (R)
- 118
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 17 | 11E | 162 | 08E | ||
| 2 | J – 6 | 19 | 19E | 154 | 16E | ||
| 3 | H – 9 | -23 | 58E | 115 | 55E | ||
| 4 | H – 6 | 15 | 71W | 244 | 74W | ||
| 5 | C – 6 | 14 | 34W | 207 | 37W | ||
| 6 | C – 7 | 18 | 26W | 199 | 29W | ||
| 7 | D – 8 | 24 | 16W | 189 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.