Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 May 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)
- 5
- Number of spots (f)
- 78
- Relative number (R)
- 128
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 34 | 21 | 08E | 216 | 05E | ||
| 2 | ? – 1 | 13 | 32E | 192 | 29E | ||
| 3 | D – 24 | -26 | 31E | 193 | 28E | ||
| 4 | D – 16 | -22 | 31W | 255 | 34W | ||
| 5 | ? – 3 | 16 | 62W | 286 | 65W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.