Daily Sunspot Evaluation
Observation Sheet Friday, 29 June 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)
- 6
- Number of spots (f)
- 21
- Relative number (R)
- 81
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19730629.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 12 | 86E | 240 ⚠ | 129 | ||
| 2 | ? – 4 | -7 | 75E | 281 | 128 | ||
| 3 | A – 2 | -5 | 06W | 2 | 106 | ||
| 4 | B – 7 | -12 | 49W | 45 | 120 | ||
| 5 | H – 5 | -7 | 71W | 67 | 117 | ||
| 6 | A – 2 | -2 | 59W | 55 | 117 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.