Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 28
- Relative number (R)
- 68
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680319.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -15 | 64E | 181 | |||
| 2 | B – 2 | -19 | 11W | 256 | |||
| 3 | G – 22 | 15 | 26W | 271 | |||
| 4 | H – 3 | 32 | 2W | 247 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.