Daily Sunspot Evaluation
Observation Sheet Thursday, 3 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)
- 13
- Number of spots (f)
- 74
- Relative number (R)
- 204
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690703.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 16 | 19E | 127 | |||
| 2 | H – 2 | 12 | 52E | 94 | |||
| 3 | A – 1 | 11 | 40E | 106 | |||
| 4 | C – 11 | 9 | 44E | 102 | |||
| 5 | ? – 1 | 9 | 83E | 63 | |||
| 6 | H – 7 | -16 | 52E | 94 | |||
| 7 | C – 6 | -13 | 44E | 102 | |||
| 8 | A – 2 | -35 | 24E | 125 | |||
| 9 | C – 10 | -18 | 35W | 181 | |||
| 10 | E – 23 | -10 | 29W | 175 | |||
| 11 | A – 2 | 13 | 66W | 212 | |||
| 12 | J – 2 | 17 | 65W | 211 | |||
| 13 | B – 6 | 20 | 05W | 151 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.