Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 8
- Number of spots (f)
- 43
- Relative number (R)
- 123
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 26 | 4E | 236 | |||
| 2 | C – 25 | 28 | 12E | 228 | |||
| 3 | A – 1 | 13 | 61E | 179 | |||
| 4 | ? – 1 | -21 | 86E | 154 | |||
| 5 | B – 6 | -19 | 35E | 205 | |||
| 6 | J – 3 | -22 | 51W | 291 | |||
| 7 | A – 1 | -14 | 39W | 279 | |||
| 8 | H – 1 | 23 | 53W | 293 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.