Daily Sunspot Evaluation
Observation Sheet Thursday, 16 July 1959
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)
- 9
- Number of spots (f)
- 86
- Relative number (R)
- 176
- Observer
- BG
- Reading
- all checks consistent
- File
- 19590716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 21 | 16E | ||||
| 2 | H – 1 | 32 | 43E | ||||
| 3 | H – 5 | 27 | 38E | ||||
| 4 | G – 2 | 10 | 18E | ||||
| 5 | H – 9 | 13 | 49E | ||||
| 6 | ? – 1 | 9 | 71E | ||||
| 7 | E – 11 | -14 | 52W | ||||
| 8 | E – 16 | 6 | 3W | ||||
| 9 | F – 31 | 18 | 23W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.