Daily Sunspot Evaluation
Observation Sheet Thursday, 13 July 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)
- 7
- Number of spots (f)
- 93
- Relative number (R)
- 163
- Observer
- GT
- Reading
- all checks consistent
- File
- 19780713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 24 | 19E | 170 | 16E | ||
| 2 | E – 53 | 18 | 21E | 168 | 18E | ||
| 3 | ? – 1 | 23 | 84E | 105 | 81E | ✓ | |
| 4 | D – 9 | 16 | 50E | 139 | 47E | ||
| 5 | B – 6 | -19 | 12W | 201 | 15W | ||
| 6 | G – 15 | -22 | 48W | 238 | 52W | ||
| 7 | D – 8 | 18 | 76W | 265 | 79W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.