Daily Sunspot Evaluation
Observation Sheet Saturday, 15 June 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)
- 40
- Relative number (R)
- 130
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 21 | 62°E | 98 | |||
| 2 | J – 2 | 14 | 68°E | 92 | |||
| 3 | J – 1 | -15 | 47°E | 113 | |||
| 4 | J – 8 | -31 | 33°E | 127 | |||
| 5 | H – 14 | -14 | 21°W | 181 | |||
| 6 | J – 2 | 11 | 84°W | 244 | |||
| 7 | J – 2 | 12 | 75°W | 235 | |||
| 8 | J – 1 | 16 | 42°W | 202 | |||
| 9 | C – 8 | 9 | 11°W | 171 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.