Daily Sunspot Evaluation
Observation Sheet Thursday, 15 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)
- 13
- Number of spots (f)
- 240
- Relative number (R)
- 370
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 11 | 17 | 71W | 158 | 74W | 18 | |
| 2 | CAI – 5 | 12 | 61W | 148 | 64W | 5 | |
| 3 | FKC – 115 | 20 | 03W | 90 | 06W | 20.5 | |
| 4 | EAI – 23 | 16 | 08E | 79 | 05E | 14.25 | |
| 5 | BXI – 3 | 25 | 12E | 75 | 09E | 3 | |
| 6 | HS – 1 | 30 | 42E | 45 | 39E | 2 | |
| 7 | AX – 1 | 18 | 72E | 15 | 69E | 1 | |
| 8 | CAI – 8 | -17 | 75W | 162 | 78W | 8 | |
| 9 | CAI – 10 | -19 | 58W | 145 | 61W | 5 | |
| 10 | FAO – 11 | -10 | 08W | 95 | 11W | 18 | |
| 11 | FKC – 50 | -20 | 17E | 70 | 14E | 21.25 | |
| 12 | AR – 1 | -10 | 63E | 24 | 60E | 1 | |
| 13 | HH – 1 | -21 | 78E | 9 | 75E | 3.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.