Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 March 2001
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)
- 4
- Number of spots (f)
- 33
- Relative number (R)
- 73
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20010320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 16 | 59W | 325 | 62W | 3° | |
| 2 | HR – 4 | 12 | 39W | 305 | 42W | 2° | |
| 3 | CAO – 5 | 9 | 56E | 210 | 53E | 5° | |
| 4 | FAS – 22 | -8 | 62W | 328 | 65W | 24 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.