Daily Sunspot Evaluation
Observation Sheet Friday, 2 March 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)
- 3
- Number of spots (f)
- 49
- Relative number (R)
- 79
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730302.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 18 | 66E | 61 | 40 | ||
| 2 | C – 10 | -13 | 49W | 176 | 39 | ||
| 3 | C – 38 | 8 | 12W | 139 | 36 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.