Daily Sunspot Evaluation
Observation Sheet Friday, 15 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)
- 6
- Number of spots (f)
- 28
- Relative number (R)
- 88
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 6 | 14 | 24E | 269 | |||
| 2 | H – 12 | 30 | 47E | 246 | |||
| 3 | A – 1 | 4 | 24E | 269 | |||
| 4 | A – 1 | -12 | 53E | 240 | |||
| 5 | C – 6 | -18 | 36E | 257 | |||
| 6 | J – 2 | -18 | 67W | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.