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(The monthly data in the wdc-like format is here.)

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                              MARCH   2010
      unit=nT                                                                                      UT
      1   2   3   4   5   6   7   8    9  10  11  12  13  14  15  16   17  18  19  20  21  22  23  24
DAY
 1    3   7  10  10  10   8   9   9    8   8   8   3   3   0   7  -3    0   6   6   5   3   4   3   1
 2   -3  -4  -2  -2  -2  -3  -3  -3    0   0  -1  -4  -7  -9  -8  -9   -2   0   1   1  -1  -4  -6 -10
 3   -7  -8  -8 -10  -9  -8  -5  -5   -4  -8  -8  -7  -4  -4  -1  -2   -3  -9 -13 -12 -14 -14 -14 -20
 4  -19 -13 -12 -12 -19 -23 -20 -17  -14 -13 -13 -11 -12 -16 -23 -22  -17 -12 -10 -10 -10  -9  -5  -6
 5   -6  -8  -8  -8  -8  -9  -8  -9  -12 -11 -13 -13 -13 -11 -10 -10  -12 -11 -10  -7  -5  -3  -4  -6

 6   -9 -10  -9  -8  -7  -9 -10  -9   -7  -6  -8  -9  -9  -7  -6  -6   -6  -6  -7  -1   1   6   3  -2
 7   -5  -1   0   1  -4 -14 -18 -13   -9  -9  -9 -11  -9  -7  -5  -5   -6  -6  -6  -6  -6  -5  -5  -5
 8   -6  -6  -4  -3   0  -2  -6  -9   -8  -9  -9  -8  -8  -7  -8  -9   -8  -5  -7  -8  -7  -8  -7  -6
 9   -5  -4  -5  -7  -6  -6  -5  -5   -2  -1   0   2   2   1  -3   0    0   1   2   4   5   8  10   7
10    2   2   4   4   4   1   1  -1   -1   2   6   6   5   0   0  -6  -11 -13 -16 -19 -23 -20 -19 -18

11  -20 -20 -21 -24 -28 -30 -27 -25  -20 -16 -14 -16 -10  -9  -9 -10   -8  -8 -10  -9 -12 -10  -8  -8
12  -12 -13 -15 -12 -14 -18 -19 -15  -13 -11 -15 -17 -17 -15 -14 -14  -13 -14 -16 -19 -19 -17 -16 -17
13  -17 -18 -19 -18 -18 -15 -14 -14  -12 -11 -10 -10  -7  -6  -6  -7   -8 -10 -11 -13 -13 -10  -9  -8
14  -12 -16 -17 -15 -15 -13 -13 -15  -12 -10 -11 -10 -13 -10  -7  -8   -8  -5  -4  -8 -14 -12  -8  -7
15   -4  -2  -7  -9  -9  -8  -7  -9  -11 -10  -8  -5  -3   0   0   0   -2  -3  -2  -5  -5  -2  -1  -2

16   -3  -2  -4  -3  -2   0   5  -3   -5  -5  -5  -5  -6  -5  -7  -8  -10  -8  -5  -1  -4   0   2   5
17    7   5   4   1  -5 -10  -9  -8  -11  -9  -7  -8  -7  -4  -3  -3    0   2   2   0  -3  -3  -5  -8
18  -13 -21 -26 -26 -15  -9  -7  -5   -4  -4  -2  -1   2   3   2   2    3   4   6   2  -1   1  -1   0
19   -2  -5  -6  -5  -4   0   0  -3   -8  -9  -6  -3   1   3   2  -3   -3  -1   0  -3  -4  -3  -3  -3
20   -5  -5  -6  -7  -9  -7  -6  -8  -11  -9  -8  -6  -8  -9  -9  -7   -6  -8 -15 -15 -12  -8  -6  -6

21   -7  -8  -9  -9  -8  -7  -6  -5   -5  -7  -7  -6  -6  -5  -4  -4   -3  -4  -3  -3  -4  -5  -4  -3
22   -2  -3  -3  -4  -2   0   0   0    0   0   0   1   1   1   0   2    1   1   3   5   5   4   3   2
23    3   3   5   4   4   3   3   4    4   2   2   0  -2   0   2   1    0   0   0   0  -1   0   1   2
24    1  -1   0   1   2   4   6   8    9   7   4   2   3   6   3   0   -3  -3  -3  -4  -6  -5  -4  -2
25    1   0  -2  -5  -6  -6  -2   4    6   7   7  10  16  16  11  14   20  15   1  -6  -7  -4  -1   0

26    1   1  -1  -3  -4  -5  -7  -8   -7  -6  -8 -10  -8  -4  -1  -1   -1   1   3   2   3   1  -4  -7
27   -9  -7  -6   2  -2   0   2   2    3   4   4   3   3   5   8   6    6   5   6   6   6   3   1   2
28    2   2   2  -1 -13 -23 -27 -20  -13  -7  -8 -11 -12 -15 -11  -9   -9  -8  -8  -9  -9  -9 -11 -11
29  -10 -10  -9  -5  -5  -5  -5  -3    0   1   1   4   8   8   6   4    1  -1  -2  -4  -7  -9 -10  -8
30   -9  -7  -6  -5  -4  -7  -5  -8   -8  -8  -9  -9  -7  -6  -7  -6   -7  -4  -2  -4  -5 -15 -14 -11

31  -10 -10 -10 -11 -13 -11  -9 -10  -10 -15 -15 -13 -12  -9  -8 -11  -12  -7  -3  -3  -3   1   1   5