Daily Sunspot Evaluation
Observation Sheet Thursday, 6 April 1967
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)
- 6
- Number of spots (f)
- 40
- Relative number (R)
- 100
- Observer
- LT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 10 | 47E | 205 ⚠ | |||
| 2 | A – 2 | -23 | 45E | 203 ⚠ | |||
| 3 | C – 17 | -27 | 29E | 187 ⚠ | |||
| 4 | B – 15 | -20 | 3E | 161 ⚠ | |||
| 5 | A – 3 | 31 | 48W | 206 ⚠ | |||
| 6 | A – 1 | 35 | 42W | 200 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.