Daily Sunspot Evaluation
Observation Sheet Friday, 10 March 1972
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)
- 7
- Number of spots (f)
- 50
- Relative number (R)
- 120
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720310.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 17 | 38E | 121 | |||
| 2 | E – 14 | 16 | 54E | 105 | |||
| 3 | J – 1 | -19 | 68E | 91 | |||
| 4 | G – 8 | -20 | 17E | 142 | |||
| 5 | H – 6 | -10 | 22W | 181 | |||
| 6 | H – 18 | -9 | 37W | 196 | |||
| 7 | A – 1 | -7 | 72W | 231 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.