Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 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)
- 16
- Number of spots (f)
- 99
- Relative number (R)
- 259
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19890620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKI – 18 | 20 | 70W | 91 | 73W | 20 | |
| 2 | DSI – 9 | 18 | 59W | 80 | 62W | 12 | |
| 3 | CAI – 6 | 29 | 39W | 60 | 42W | 6.5 | |
| 4 | HA – 2 | 31 | 23W | 44 | 26W | 4 | |
| 5 | DAI – 7 | 18 | 06E | 15 | 03E | 4 | |
| 6 | DAO – 7 | 21 | 25E | 356 | 22E | 7.5 | |
| 7 | ? – 2 | 25 | 78E | 303 | 75E | 3 | |
| 8 | ? – 2 | -10 | 75W | 96 | 78W | 18 | |
| 9 | AX – 1 | -24 | 70W | 91 | 73W | - | |
| 10 | FHI – 16 | -20 | 49W | 70 | 52W | 24 | |
| 11 | AX – 1 | -9 | 01E | 20 | 02W | - | |
| 12 | CKO – 3 | -20 | 14E | 7 | 11E | 9 | |
| 13 | BRI – 9 | -12 | 20E | 1 | 17E | 4 | |
| 14 | AX – 1 | -24 | 29E | 353 | 25E | - | |
| 15 | HS – 1 | -16 | 45E | 336 | 42E | 2 | |
| 16 | ? – 14 | -18 | 75E | 306 | 72E | 20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.