Daily Sunspot Evaluation
Observation Sheet Thursday, 19 October 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)
- 12
- Number of spots (f)
- 135
- Relative number (R)
- 255
- Observer
- OG
- Reading
- all checks consistent
- File
- 19781019.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 31 | 32 | 18E | 317 | 45E | ||
| 2 | J – 6 | 17 | 06E | 329 | 03E | ||
| 3 | B – 8 | 20 | 10E | 325 | 07E | ||
| 4 | A – 1 | 35 | 53E | 282 | 50E | ||
| 5 | J – 1 | 33 | 65E | 270 | 62E | ||
| 6 | E – 20 | 28 | 70E | 265 | 67E | ||
| 7 | J – 1 | -20 | 61E | 274 | 58E | ||
| 8 | D – 14 | -27 | 27E | 308 | 24E | ||
| 9 | E – 29 | -22 | 32W | 7 | 35W | ||
| 10 | G – 5 | -23 | 71W | 46 | 74W | ||
| 11 | E – 17 | 20 | 63W | 38 | 66W | ||
| 12 | H – 2 | 29 | 34W | 9 | 37W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.