Daily Sunspot Evaluation
Observation Sheet Saturday, 18 March 1978
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)
- 36
- Relative number (R)
- 96
- Observer
- FA
- Reading
- all checks consistent
- File
- 19780318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 33 | 27E | 268 | 25E | ||
| 2 | C – 14 | 19 | 30E | 265 | 28E | ||
| 3 | J – 1 | 21 | 64E | 231 | 62E | ||
| 4 | E – 15 | -33 | 17W | 312 | 19W | ||
| 5 | A – 1 | -2 | 65W | 0 | 67W | ||
| 6 | H – 3 | 13 | 61W | 356 | 63W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.