Daily Sunspot Evaluation
Observation Sheet Wednesday, 20 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)
- 15
- Relative number (R)
- 55
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 3 | -12 | 63E | 167 | |||
| 2 | A – 1 | -15 | 51E | 179 | |||
| 3 | G – 6 | 15 | 40W | 270 | |||
| 4 | H – 5 | 31 | 13W | 243 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.