Daily Sunspot Evaluation
Observation Sheet Tuesday, 30 January 1968
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)
- 10
- Number of spots (f)
- 110
- Relative number (R)
- 210
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 53 | 14 | 4E | 165 | |||
| 2 | C – 11 | 13 | 18E | 151 | |||
| 3 | C – 13 | 22 | 40E | 129 | |||
| 4 | J – 1 | 26 | 54E | 115 | |||
| 5 | ? – 2 | 20 | 73E | 96 | |||
| 6 | G – 5 | 22 | 55E | 114 | |||
| 7 | ? – 5 | 7 | 79E | 90 | |||
| 8 | ? – 1 | -23 | 90E | 79 | |||
| 9 | B – 15 | -13 | 14E | 155 | |||
| 10 | C – 4 | -11 | 2E | 167 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.