Daily Sunspot Evaluation
Observation Sheet Monday, 15 May 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)
- 11
- Number of spots (f)
- 90
- Relative number (R)
- 200
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19890515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BAO – 12 | 26 | 32W | 169 | 34W | 6.5 | |
| 2 | AR – 1 | 16 | 28W | 165 | 30W | 0.5 | |
| 3 | HH – 9 | 8 | 05W | 142 | 07W | 6 | |
| 4 | AR – 1 | 16 | 03E | 134 | 01E | - | |
| 5 | DAI – 14 | 18 | 20E | 117 | 18E | 7 | |
| 6 | CAO – 10 | 17 | 32E | 105 | 30E | 11.5 | |
| 7 | GAO – 20 | 15 | 49E | 88 | 43E | 10.5 | |
| 8 | CKO – 7 | -31 | 58W | 195 | 60W | 15 | |
| 9 | ESI – 14 | -21 | 24W | 161 | 26W | 11 | |
| 10 | HS – 1 | -10 | 16E | 121 | 14E | 1 | |
| 11 | HA – 1 | -27 | 79E | 58 | 77E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.