Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 July 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)
- 72
- Relative number (R)
- 122
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 20 | 36E | 126 | |||
| 2 | E – 31 | -8 | 38E | 124 | |||
| 3 | J – 1 | -16 | 57E | 105 | |||
| 4 | H – 22 | -17 | 09E | 153 | |||
| 5 | C – 17 | -14 | 41W | 173 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.