Daily Sunspot Evaluation
Observation Sheet Tuesday, 2 September 1969
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)
- 54
- Relative number (R)
- 104
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 15 | 45E | 14 | |||
| 2 | A – 1 | -18 | 07E | 52 | |||
| 3 | C – 18 | -41 | 40W | 99 | |||
| 4 | C – 28 | 7 | 20W | 79 | |||
| 5 | G – 6 | 41 | 72W | 131 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.