Daily Sunspot Evaluation
Observation Sheet Monday, 27 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)
- 10
- Number of spots (f)
- 117
- Relative number (R)
- 217
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 26 | 18 | 06E | 45 | |||
| 2 | H – 3 | 23 | 08E | 43 | |||
| 3 | J – 4 | 12 | 38E | 13 | |||
| 4 | E – 33 | 6 | 27E | 24 | |||
| 5 | ? – 1 | -9 | 86E | 325 | |||
| 6 | J – 1 | 0 | 28E | 23 | |||
| 7 | H – 10 | -8 | 53E | 358 | |||
| 8 | G – 3 | -13 | 06E | 45 | |||
| 9 | B – 5 | -21 | 06E | 45 | |||
| 10 | E – 31 | 9 | 39W | 90 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.