Daily Sunspot Evaluation
Observation Sheet Saturday, 16 December 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)
- 8
- Number of spots (f)
- 150
- Relative number (R)
- 230
- Observer
- GT
- Reading
- all checks consistent
- File
- 19781216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 25 | 66E | 223 | 64E | ||
| 2 | J – 1 | 22 | 54E | 235 | 52E | ||
| 3 | J – 4 | 13 | 76E | 213 | 74E | ||
| 4 | D – 17 | -21 | 35E | 254 | 33E | ||
| 5 | J – 3 | -23 | 18E | 271 | 16E | ||
| 6 | F – 85 | -16 | 36W | 325 | 38W | ||
| 7 | G – 5 | -20 | 58W | 347 | 60W | ||
| 8 | E – 33 | 20 | 52W | 341 | 54W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.