| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/03/21 | 1 | 30 | HAX | S12E75 | |
| 2001/03/22 | 3 | 110 | EAO | S13E66 | |
| 2001/03/23 | 8 | 180 | EAO | S13E54 | |
| 2001/03/24 | 11 | 130 | EAO | S13E39 | |
| 2001/03/25 | 13 | 150 | FAO | S13E26 | |
| 2001/03/26 | 25 | 100 | FAI | S12E13 | |
| 2001/03/27 | 30 | 90 | FAI | S13W02 | |
| 2001/03/28 | 13 | 80 | EAO | S12W11 | |
| 2001/03/29 | 13 | 50 | CRO | S12W34 | |
| 2001/03/30 | 12 | 50 | DSO | S12W50 | |
| 2001/03/31 | 8 | 50 | BXO | S10W63 | |
| 2001/04/01 | 6 | 50 | CAO | S11W75 | |
| 2001/04/02 | 1 | 50 | HSX | S12W86 |
| C |
|---|
| 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C8.07 | 2001/03/21 | 06:56 | 07:24 | 07:30 | |
| 2 | C6.7 | 2001/03/24 | 08:09 | 08:14 | 08:18 | |
| 3 | C3.55 | 2001/03/23 | 05:38 | 05:43 | 05:46 |
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| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/04/28 | M1.11 |
| Last geomagnetic storm | 2026/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| Last 30 days | 90.3 -1 |