Daily Sunspot Evaluation
Observation Sheet Sunday, 20 June 2004
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)
- 6
- Number of spots (f)
- 75
- Relative number (R)
- 135
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 11 | 12 | 12W | 75 | 13W | 14.5 | 108 |
| 2 | HS – 1 | -11 | 58W | 121 | 59W | 1.5 | 106 |
| 3 | FKI – 26 | -11 | 05E | 58 | 04E | 16 | 110 |
| 4 | CRI – 25 | -15 | 13E | 50 | 12E | 10.5 | 115 |
| 5 | HR – 4 | -11 | 26E | 37 | 25E | 1.5 | 116 |
| 6 | CRE – 8 | -10 | 38E | 25 | 37E | 4.5 | 117 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.