Daily Sunspot Evaluation
Observation Sheet Saturday, 19 May 1990
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)
- 111
- Relative number (R)
- 241
- Observer
- HE
- Reading
- all checks consistent
- File
- 19900519.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 22 | 46W | 353 | 49W | 4.5 | 198 |
| 2 | AX – 1 | 29 | 18W | 325 | 21W | - | 201 |
| 3 | AX – 1 | 22 | 16W | 323 | 19W | - | 211 |
| 4 | AX – 2 | 10 | 11W | 318 | 14W | 1.5 | 212 |
| 5 | DKC – 21 | 35 | 09W | 316 | 12W | 9.5 | 202 |
| 6 | BRI – 10 | 7 | 43E | 264 | 40E | 5 | 207 |
| 7 | ? – 1 | 25 | 81E | 226 | 78E | - | 213 |
| 8 | AX – 1 | -14 | 20W | 327 | 23W | - | 214 |
| 9 | AX – 1 | -19 | 20W | 327 | 23W | - | 215 |
| 10 | FKC – 61 | -16 | 03W | 310 | 06W | 16.5 | 205 |
| 11 | AR – 2 | -10 | 54E | 253 | 51E | 0.5 | 209 |
| 12 | CAO – 5 | -19 | 64E | 243 | 61E | 8 | 210 |
| 13 | ? – 2 | -13 | 75E | 232 | 72E | 7 | 216 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.