Daily Sunspot Evaluation
Observation Sheet Saturday, 1 September 1973
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)
- 55
- Relative number (R)
- 145
- Observer
- SM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19730901.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 6 | 14 | 65E | 162 | 159 | ||
| 2 | A – 3 | -17 | 67E | 160 | 162 | ||
| 3 | H – 21 | -15 | 35E | 192 | 157 | ||
| 4 | B – 7 | -13 | 17W | 244 | 158 | ||
| 5 | B – 3 | 2 | 44W | 271 | 155 | ||
| 6 | B – 7 | 5 | 25W | 252 | 160 | ||
| 7 | J – 2 | 15 | 33W | 260 | 153 | ||
| 8 | B – 2 | 15 | 15W | 242 | 156 | ||
| 9 | B – 4 | 15 | 00W | 231 ⚠ | 161 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.