Daily Sunspot Evaluation
Observation Sheet Sunday, 18 June 1989
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)
- 14
- Number of spots (f)
- 140
- Relative number (R)
- 280
- Observer
- HE
- Reading
- all checks consistent
- File
- 19890618.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 33 | 19 | 48W | 91 | 47W | 19 | 281 |
| 2 | EAI – 16 | 17 | 36W | 79 | 35W | 12 | 291 |
| 3 | AX – 2 | 28 | 17W | 60 | 16W | 2 | 292 |
| 4 | HA – 4 | 29 | 01W | 44 | 00 | 3 | 290 |
| 5 | AX – 2 | 34 | 16E | 27 | 17E | 0.5 | 302 |
| 6 | AX – 8 | 17 | 28E | 15 | 29E | 3.5 | 289 |
| 7 | DKO – 8 | 20 | 46E | 357 | 47E | 8 | 282 |
| 8 | FHO – 4 | -11 | 54W | 97 | 83W | 18 | 300 |
| 9 | AX – 3 | -24 | 49W | 92 | 48W | 1.5 | 290 |
| 10 | FHC – 44 | -20 | 27W | 70 | 26W | 22 | 301 |
| 11 | AX – 3 | -22 | 08E | 35 | 09E | 3.5 | 286 |
| 12 | CHO – 8 | -21 | 38E | 5 | 39E | 12.5 | 300 |
| 13 | BXO – 4 | -13 | 46E | 357 | 47E | 8.5 | 292 |
| 14 | HA – 1 | -17 | 67E | 336 | 68E | 1.5 | 282 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.