Daily Sunspot Evaluation
Observation Sheet Thursday, 7 March 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)
- 4
- Number of spots (f)
- 25
- Relative number (R)
- 65
- Observer
- DK
- Reading
- all checks consistent
- File
- 19680307.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 24 | 09E | 33 | |||
| 2 | D – 6 | -12 | 02E | 40 | |||
| 3 | H – 3 | -22 | 05W | 47 | |||
| 4 | C – 8 | -23 | 20W | 62 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.