Daily Sunspot Evaluation
Observation Sheet Saturday, 18 May 2002
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)
- 9
- Number of spots (f)
- 33
- Relative number (R)
- 123
- Observer
- MB
- Reading
- counts consistent, some coordinates doubtful
- File
- 20020518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 3 | 3 | 46E | 24 | 43E | ~03 | |
| 2 | EK – 19 | 8 | 59E | 11 | 56E | ~11 | |
| 3 | ? – 2 | 14 | 80E | 350 | 77E | ? | |
| 4 | HA – 2 | -3 | 72W | 142 | 35W | ≤04 | |
| 5 | AX – 1 | -24 | 57W | 127 | 60W | ||
| 6 | HR – 1 | -6 | 40W | 110 | 43W | ≥05 | |
| 7 | HH – 1 | -22 | 21W | 91 | 24W | ~04 | |
| 8 | HA – 3 | -22 | 26E | 74 ⚠ | 33E | ~03 | |
| 9 | HA – 1 | -14 | 38E | 72 ⚠ | 35E | ≥01 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.