Daily Sunspot Evaluation
Observation Sheet Monday, 15 July 1968
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)
- 9
- Number of spots (f)
- 66
- Relative number (R)
- 156
- Observer
- DK
- Reading
- all checks consistent
- File
- 19680715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 26 | 38E | 87 | |||
| 2 | H – 6 | 12 | 32E | 93 | |||
| 3 | J – 2 | 7 | 80E | 45 | |||
| 4 | H – 2 | -15 | 13E | 112 | |||
| 5 | A – 3 | -29 | 02W | 127 | |||
| 6 | A – 1 | -16 | 58W | 183 | |||
| 7 | F – 44 | 10 | 32W | 157 | |||
| 8 | J – 3 | 10 | 60W | 185 | |||
| 9 | B – 3 | 29 | 30W | 155 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.