Daily Sunspot Evaluation
Observation Sheet Sunday, 16 September 1979
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)
- 28
- Relative number (R)
- 108
- Observer
- SM
- Reading
- all checks consistent
- File
- 19790916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 32 | 34E | 238 | 31E | 209 | |
| 2 | B – 4 | 20 | 19E | 253 | 16E | 202 | |
| 3 | ? – 3 | 6 | 80E | 192 | 77E | 211 | |
| 4 | J – 1 | -12 | 43E | 229 | 40E | 206 | |
| 5 | B – 6 | -12 | 19E | 253 | 16E | 210 | |
| 6 | H – 2 | -26 | 05E | 267 | 02E | 200 | |
| 7 | E – 6 | 8 | 36W | 308 | 39W | 196 | |
| 8 | A – 3 | 12 | 35W | 307 | 38W | 195 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.