Daily Sunspot Evaluation
Observation Sheet Thursday, 16 July 1970
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)
- 44
- Relative number (R)
- 114
- Observer
- FA
- Reading
- all checks consistent
- File
- 19700716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 15 | 58°E | 139 | |||
| 2 | H – 6 | -13 | 02W | 199 | |||
| 3 | A – 2 | -5 | 17°W | 214 | |||
| 4 | J – 1 | 16 | 68W | 265 | |||
| 5 | C – 6 | 16 | 32W | 229 | |||
| 6 | A – 2 | 19 | 32W | 229 | |||
| 7 | C – 26 | 17 | 06W | 203 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.