Daily Sunspot Evaluation
Observation Sheet Friday, 2 February 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)
- 15
- Number of spots (f)
- 248
- Relative number (R)
- 398
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 11 | 21 | 0 | 130 | |||
| 2 | A – 5 | 20 | 10E | 120 | |||
| 3 | A – 2 | 26 | 14E | 116 | |||
| 4 | G – 15 | 12 | 14E | 116 | |||
| 5 | J – 2 | 19 | 33E | 97 | |||
| 6 | D – 7 | 7 | 35E | 95 | |||
| 7 | J – 1 | 12 | 56E | 74 | |||
| 8 | E – 28 | -15 | 41E | 89 | |||
| 9 | D – 16 | -12 | 12E | 118 | |||
| 10 | J – 1 | -24 | 46E | 84 | |||
| 11 | C – 15 | -21 | 24E | 106 | |||
| 12 | A – 2 | -32 | 48E | 82 | |||
| 13 | B – 8 | -13 | 25W | 155 | |||
| 14 | C – 10 | -12 | 37W | 167 | |||
| 15 | F – 125 | 13 | 32W | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.