Daily Sunspot Evaluation
Observation Sheet Monday, 19 March 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)
- 16
- Number of spots (f)
- 115
- Relative number (R)
- 275
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900319.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 20 | 66W | 98 | 68W | 2.5 | 106 |
| 2 | CAO – 17 | 32 | 41W | 73 | 43W | 10 | 108 |
| 3 | HS – 1 | 43 | 00 | 32 | 02W | 4.5 | 116 |
| 4 | AR – 1 | 5 | 04E | 28 | 02E | 1 | 113 |
| 5 | BXI – 18 | 16 | 27E | 5 | 25E | 9 | 114 |
| 6 | AX – 1 | 18 | 46E | 346 | 44E | - | 120 |
| 7 | AX – 1 | 15 | 72E | 320 | 70E | - | 125 |
| 8 | AX – 2 | -25 | 59W | 91 | 61W | 3 | 112 |
| 9 | BXO – 5 | -33 | 01W | 33 | 03W | 4 | 121 |
| 10 | AR – 1 | -20 | 13E | 19 | 11G | 1 | 115 |
| 11 | FHC – 37 | -35 | 18E | 14 | 16E | 21 | 114 |
| 12 | HA – 1 | -11 | 45E | 347 | 43E | 1 | 119 |
| 13 | AX – 2 | -13 | 63E | 329 | 61G | - | 123 |
| 14 | CAI – 22 | -32 | 68E | 324 | 66E | 17 | 122 |
| 15 | ? – 4 | -17 | 77E | 315 | 75E | 8 | 124 |
| 16 | ? – 1 | -9 | 85E | 307 | 83E | - | 126 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.