Daily Sunspot Evaluation
Observation Sheet Thursday, 16 March 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)
- 10
- Number of spots (f)
- 160
- Relative number (R)
- 260
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19890316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | PKC – 65 | 33 | 45W | 252 | 46W | 23.0 | |
| 2 | DAI – 28 | 17 | 02E | 206 | 01E | 9.0 | |
| 3 | DAI – 7 | 32 | 33E | 175 | 32E | 3.0 | |
| 4 | BXO – 9 | 17 | 69E | 139 | 68E | 8.5 | |
| 5 | ? – 1 | 12 | 80E | 128 | 79E | - | |
| 6 | CAI – 23 | -17 | 33W | 241 | 34W | 12.5 | |
| 7 | BXO – 4 | -16 | 20W | 228 | 21W | 3.5 | |
| 8 | AX – 2 | -17 | 12W | 220 | 13W | 2.0 | |
| 9 | SKS – 18 | -14 | 32E | 176 | 31E | 8.0 | |
| 10 | BXO – 3 | -16 | 61E | 147 | 60E | 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.