Daily Sunspot Evaluation
Observation Sheet Saturday, 19 August 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)
- 5
- Number of spots (f)
- 35
- Relative number (R)
- 85
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720819.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 7 | 27E | 151 | |||
| 2 | A – 2 | -5 | 71E | 107 | |||
| 3 | J – 3 | -25 | 11E | 167 | |||
| 4 | D – 14 | -11 | 03W | 181 | |||
| 5 | D – 13 | 15 | 62W | 240 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.