Daily Sunspot Evaluation
Observation Sheet Friday, 18 March 1983
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)
- 3
- Number of spots (f)
- 35
- Relative number (R)
- 65
- Observer
- OG
- Reading
- all checks consistent
- File
- 19830318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 20 | -12 | 06E | 307 | 05E | 7 | 64 |
| 2 | DKF – 14 | -7 | 32E | 281 | 31E | 12 | 65 |
| 3 | HAX – 1 | -12 | 43E | 270 | 42E | 15 | 67 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.