Daily Sunspot Evaluation
Observation Sheet Thursday, 27 September 1973
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)
- 8
- Number of spots (f)
- 34
- Relative number (R)
- 114
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 184 | |||||
| 2 | ? – 1 | 182 | |||||
| 3 | ? – 5 | 183 | |||||
| 4 | J – 2 | 186 | |||||
| 5 | J – 2 | 176 | |||||
| 6 | A – 2 | 179 | |||||
| 7 | A – 2 | 185 | |||||
| 8 | E – 17 | 175 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.