Daily Sunspot Evaluation
Observation Sheet Monday, 1 April 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)
- 9
- Number of spots (f)
- 56
- Relative number (R)
- 146
- Observer
- DK
- Reading
- all checks consistent
- File
- 19680401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | -13 | 31°E | 40 | |||
| 2 | B – 2 | -17 | 35°E | 36 | |||
| 3 | B – 8 | -19 | 04°E | 67 | |||
| 4 | E – 26 | -21 | 05°W | 76 | |||
| 5 | A – 1 | -14 | 15°W | 86 | |||
| 6 | J – 4 | -15 | 41°W | 112 | |||
| 7 | A – 2 | 12 | 64°W | 135 | |||
| 8 | J – 1 | 11 | 46°W | 117 | |||
| 9 | E – 10 | 13 | 24°W | 95 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.