Daily Sunspot Evaluation
Observation Sheet Thursday, 7 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)
- 11
- Relative number (R)
- 51
- Observer
- SK
- Reading
- all checks consistent
- File
- 19730607.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 5 | 08E | 279 | 107 | ||
| 2 | B – 3 | 13 | 25E | 262 | 104 | ||
| 3 | ? – 3 | 15 | 80E | 207 | 106 | ||
| 4 | J – 1 | -15 | 78E | 209 | 108 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.