Daily Sunspot Evaluation
Observation Sheet Friday, 21 May 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)
- 5
- Number of spots (f)
- 22
- Relative number (R)
- 72
- Observer
- MS
- Reading
- all checks consistent
- File
- 20040521.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 17 | 08E | 93 | 05E | ≈ 2 | 88 |
| 2 | CAO – 3 | -3 | 75W | 176 | 78W | ≈ 10 | 83 |
| 3 | CRO – 4 | -11 | 37W | 138 | 40W | ≈ 6 | 90 |
| 4 | HS – 1 | -9 | 19W | 120 | 22W | 2 | 86 |
| 5 | DAI – 13 | -11 | 64E | 37 | 61E | -10 | 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.