Table 1.
The table lists for each station (Id) the geomagnetic latitude (Lat), the start and end dates for the period when data exist, the number of 30-min samples (N), and the 90% and 99% percentiles, and the maximum of 
for all available data in units of nT/min. The magnetic coordinates are based on IGRF for the year 2010. Note that the statistics is only meaningful per station basis and that comparison between stations cannot be done as the they cover different periods and have varying degree of data gaps.
| Id | Lat | Start date | End date | N | 90% | 99% | Max |
|---|---|---|---|---|---|---|---|
| AQU | 42.2 | 1992-01-01 | 2009-12-31 | 310,773 | 3.6 | 6.4 | 130 |
| SUA | 42.2 | 1999-01-01 | 2009-12-31 | 160,910 | 3.2 | 9.5 | 206 |
| SPT | 42.4 | 1997-01-01 | 2010-12-31 | 245,396 | 2.2 | 6.3 | 125 |
| EBR | 42.8 | 2000-01-01 | 2009-12-31 | 174,124 | 5.1 | 10.8 | 313 |
| THY | 45.8 | 1991-01-01 | 2009-12-31 | 325,160 | 3.6 | 9.4 | 196 |
| HRB | 46.7 | 1997-01-01 | 2009-12-31 | 227,878 | 3.2 | 8.5 | 263 |
| NCK | 46.7 | 1993-01-01 | 2010-12-31 | 296,295 | 3.2 | 8.6 | 187 |
| FUR | 48.1 | 1990-01-01 | 2010-12-31 | 366,751 | 3.2 | 8.5 | 698 |
| CLF | 49.5 | 1981-01-01 | 2009-12-31 | 489,913 | 4.1 | 10.4 | 312 |
| BEL | 50.1 | 1984-01-01 | 2009-12-31 | 455,756 | 4.5 | 12.0 | 219 |
| NGK | 51.6 | 1995-01-01 | 2009-12-31 | 262,003 | 4.1 | 11.0 | 278 |
| HLP | 53.1 | 1995-01-01 | 2009-12-31 | 262,649 | 5.4 | 15.6 | 326 |
| BOX | 53.4 | 2004-04-01 | 2009-12-31 | 99,753 | 5.1 | 14.0 | 539 |
| HAD | 53.5 | 1983-01-01 | 2010-12-31 | 489,931 | 4.5 | 11.0 | 327 |
| WNG | 53.9 | 1981-01-01 | 2009-12-31 | 506,287 | 5.8 | 16.1 | 716 |
| BFE | 55.2 | 1982-01-01 | 2008-12-31 | 437,388 | 7.1 | 20.6 | 1995 |
| VAL | 55.4 | 1991-01-01 | 2010-12-31 | 337,352 | 3.6 | 9.2 | 358 |
| ESK | 57.5 | 1983-01-01 | 2010-12-31 | 490,406 | 6.4 | 18.4 | 1271 |
| LOV | 57.8 | 1982-01-01 | 2004-04-30 | 391,194 | 7.3 | 25.6 | 2688 |
| NUR | 57.8 | 1991-01-01 | 2009-12-31 | 332,609 | 7.1 | 26.0 | 942 |
| UPS | 58.2 | 2003-01-01 | 2009-12-31 | 122,722 | 5.7 | 17.3 | 720 |
| LER | 61.7 | 1983-01-01 | 2009-12-31 | 473,156 | 6.4 | 28.2 | 992 |
| DOB | 61.8 | 1999-01-01 | 2009-12-31 | 191,686 | 8.0 | 37.0 | 659 |
| SOD | 63.9 | 1980-01-01 | 2009-12-31 | 525,924 | 28.2 | 107.0 | 1997 |
| ABK | 66.0 | 1979-01-01 | 2009-12-31 | 522,409 | 42.7 | 154.4 | 2248 |
| TRO | 67.2 | 1988-01-01 | 2009-12-31 | 331,667 | 39.8 | 137.6 | 1050 |
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