Solar and geomagnetic data (last month)

Date Measured
Solar flux
Sunspot number Planetary A index K indices (3-hour intervals) Min-max solar wind speed (km/sec) Number of flares (events)
STAR NOAA STAR NOAA Daily low - high Planetary Boulder C M X
20100228 78.1 11 13 2.3 2 0-4 00101101 02011211 285-335      
20100227 78.6 11 26 1.8 2 0-4 00000111 10001100 285-314      
20100226 80.5 23 26 1.9 2 0-5 10000001 20000010 296-373      
20100225 82.7 28 30 2.1 2 0-7 10000012 10110112 314-384      
20100224 82.6 31 40 3.0 3 0-12 13000101 13011100 307-353      
20100223 84.2 42 31 1.8 2 0-6 21000010 22110210 298-358      
20100222 83.7 15 14 4.1 4 0-6 11011112 11121211 314-369      
20100221 83.5 14 17 1.3 1 0-3 00011001 00011201 348-398      
20100220 83.8 17 19 1.0 1 0-4 00000001 10011111 347-472      
20100219 83.7 18 23 3.4 3 0-7 10001112 11112222 386-538      
20100218 85.0 21 17 3.5 4 0-7 00002221 00012330 337-436      
20100217 86.9 20 49 3.8 4 0-9 22000002 32100113 303-358      
20100216 86.8 40 28 9.4 9 2-22 42330103 42440213 287-343      
20100215 87.6 26 27 13.5 14 5-27 23121244 34331243 282-344 1    
20100214 89.4 28 28 3.9 4 0-12 00111003 00222012 276-330 1    
20100213 94.1 41 37 3.3 3 0-6 11000212 11101311 284-347 4    
20100212 95.5 50 38 5.5 6 2-15 13211211 23311211 301-379 3 2  
20100211 94.2 47 64 5.3 5 3-6 22212211 22311211 348-376 1    
20100210 91.3 49 55 3.3 3 3-4 11111111 11120111 280-326 3    
20100209 91.4 61 65 3.1 3 2-6 10101201 01110111 279-360 3    
20100208 93.7 65 71 3.1 3 0-7 22100001 23100002 286-363 18 4  
20100207 90.3 48 51 2.8 3 0-9 10000112 11101122 312-378 5 1  
20100206 87.5 36 30 4.0 4 0-15 00002311 00012321 304-405 5 2  
20100205 77.8 37 22 3.0 3 0-6 00001211 00101111 316-355      
20100204 73.9 11 11 2.5 2 0-6 21000111 11000110 353-453      
20100203 74.4 11 11 9.0 9 3-15 31333221 31333321 437-597      
20100202 75.2 11 11 8.9 9 4-22 32122214 32221224 429-553      
20100201 75.3 16 16 6.1 6 3-12 11112213 11222213 333-466      

This page is normally updated once a day by Jan Alvestad. All values are preliminary.

[Solar Terrestrial Activity Report]