Daily Sunspot Evaluation
Observation Sheet Sunday, 17 June 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)
- 13
- Number of spots (f)
- 134
- Relative number (R)
- 264
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20010617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 3 | 78W | 248 | 80W | 8 | |
| 2 | HS – 1 | 22 | 75W | 245 | 77W | 1 | |
| 3 | HS – 2 | 26 | 71W | 241 | 73W | ~2.5 | |
| 4 | HS – 1 | 5 | 68W | 238 | 70W | ~1.5 | |
| 5 | HA – 1 | 19 | 63W | 233 | 65W | 2 | |
| 6 | HA – 3 | 22 | 27W | 197 | 29W | ~2.5 | |
| 7 | DAI – 7 | 10 | 02E | 168 | 00 | ~7.5 | |
| 8 | FKC – 58 | 15 | 32E | 138 | 30E | ~20.5 | |
| 9 | HK – 5 | 8 | 34E | 136 | 32E | 3.5 | |
| 10 | HA – 4 | 22 | 42E | 128 | 40E | ~3.5 | |
| 11 | FKC – 21 | 18 | 59E | 111 | 57E | 23 | |
| 12 | HA – 12 | -14 | 01W | 171 | 03W | 4 | |
| 13 | DAC – 14 | -25 | 15E | 155 | 13E | ~9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.