Daily Sunspot Evaluation
Observation Sheet Sunday, 27 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)
- 37
- Relative number (R)
- 87
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 7 | -7 | 63E | 123 | |||
| 2 | C – 26 | -16 | 35E | 151 | |||
| 3 | J – 2 | 12 | 53W | 239 | |||
| 4 | A – 1 | 14 | 59W | 245 | |||
| 5 | A – 1 | 14 | 29W | 215 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.