Daily Sunspot Evaluation
Observation Sheet Saturday, 16 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)
- 21
- Relative number (R)
- 61
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 4 | 15 | 15E | 269 | |||
| 2 | H – 10 | 31 | 39E | 245 | |||
| 3 | A – 3 | -13 | 45E | 239 | |||
| 4 | A – 4 | -17 | 25E | 259 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.