Daily Sunspot Evaluation
Observation Sheet Thursday, 16 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)
- 39
- Relative number (R)
- 99
- Observer
- FA
- Reading
- all checks consistent
- File
- 19780316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 23 | 51E | 270 | 43E | ||
| 2 | J – 5 | 19 | 55E | 266 | 53E | ||
| 3 | E – 22 | -33 | 08E | 313 | 06E | ||
| 4 | J – 4 | -2 | 39W | 0 | 44W | ||
| 5 | ? – 1 | 13 | 77W | 38 | 79W | ||
| 6 | H – 6 | 15 | 35W | 356 | 37W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.