Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 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)
- 4
- Number of spots (f)
- 45
- Relative number (R)
- 85
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730613.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 10 | 16 | 00 | 208 | 106 | ||
| 2 | H – 11 | 12 | 57E | 151 | 111 | ||
| 3 | G – 4 | -15 | 00 | 208 | 108 | ||
| 4 | D – 20 | 14 | 57W | 265 | 104 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.