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

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                                MAY   2006
      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    2   3   3   3   2   0  -1  -2   -3  -3   2   5   4   4   2   0    0   1   3   5   4   3   2   1
 2    1   4   5   4   3   2   4   9   11  12  11  11  10   9   8   7    5   3   5   5   4   2   1   3
 3    2   1   3   5   5   5   6   7    7   9  13  15  15  14  14  12   14  14  16  16  18  15  14  13
 4   13  14  12   9  11  14   9   4    1  -6 -13 -20 -26 -34 -38 -40  -32 -28 -27 -30 -24 -26 -18 -15
 5  -20 -25 -31 -30 -34 -37 -40 -37  -34 -26 -20 -16 -14 -15 -14 -15  -18 -19 -18 -17 -17 -16 -13 -12

 6  -11 -15 -17 -17 -15 -16 -16 -12   -6  -6 -11  -8  -2  -6  -5  -3    2   0  -2  -1 -24 -53 -47 -34
 7  -32 -29 -30 -27 -23 -19 -29 -32  -37 -43 -30 -25 -30 -34 -31 -29  -26 -26 -26 -26 -25 -25 -24 -22
 8  -23 -21 -23 -27 -24 -21 -18 -16  -15 -16 -14 -15 -14 -13 -12 -14  -14 -13 -11 -12 -14 -13 -13 -12
 9  -14 -17 -16 -15 -13 -12 -12 -11  -10 -10  -9  -7  -7  -8 -10 -10  -11  -9  -8  -7  -5  -4   0   4
10    4   2   1   1   3   4   3   2    3   4   1   1   2   2   2   4    4   8  12  17  11   1  -8 -10

11   -9 -13 -15 -21 -20 -16 -15 -17  -21 -22 -16  -4  -2 -10 -14 -16  -16 -15 -18 -20 -17 -18 -13 -22
12  -28 -27 -27 -22 -19 -23 -25 -22  -23 -24 -21 -22 -20 -17 -17 -14  -16 -17 -17 -17 -18 -16 -15 -14
13  -16 -13 -12 -15 -17 -18 -17 -18  -16 -13 -11  -9  -9 -11 -11 -10  -12 -11 -11 -11 -11  -9  -7  -7
14   -9 -12 -17 -17 -13 -12  -9 -10  -11  -8  -9 -12 -14 -13 -10  -9   -9 -12 -10 -10  -9  -8  -9  -9
15  -13 -16 -16 -13 -10  -5  -6  -9  -10 -11 -11 -11 -11 -11  -9  -7   -5  -6  -9  -9  -7  -5  -7  -9

16  -13 -14 -12 -10  -5  -3  -2  -3   -3  -4  -5  -7  -6  -7  -7  -5   -4  -4  -5  -6  -5  -4  -2  -1
17   -2  -4  -6  -8  -5  -5  -4  -2    2   4   4   3   1   2   0   0   -1  -3  -2  -1   2   6   4   1
18    1   2   2   4   7  15  18  11   -2  -4   5   8   7   6   5  -5  -22 -38 -37 -35 -28 -25 -20 -23
19  -20 -18 -20 -21 -20 -18 -19 -15  -14 -13 -11 -11 -13 -14 -14 -15  -14 -12  -8  -4  -4  -7  -9 -14
20  -20 -20 -18 -13  -8  -5  -7  -9  -11 -11 -10 -10  -9  -9  -9  -8  -12 -12  -8  -7  -5   3  -1  -4

21  -10 -16 -13  -6  -3  -2  -3  -3   -2  -3   0  -2  -4  -5  -6  -4   -4  -5 -14 -17 -15 -14 -13 -12
22  -14 -16 -14 -15 -11  -6  -4  -4   -7  -6  -4  -1  -6  -4  -4  -3   -6  -8  -6  -1   0  -2  -6  -6
23   -9 -11 -14 -13  -8  -5  -6  -8   -4  -3  -4  -7  -6  -4  -4  -4   -8  -3  -4  -5  -7  -6  -6  -7
24   -8  -7  -4   0   2   2   3   7    7   5   3   5   7   8   8   9    9   8   8   8   6   4   4   4
25    5   8  10  10  11   8   5   4    1   4   5   1   0   2   5   6    6   6   7   5   1  -1  -4  -1

26   -4 -10 -10  -5  -2   0   0   0   -1   0   1   3   3   4   6   3    1   2   0   1   0   1   2   1
27   -1  -2  -2  -3  -1   0   0   3    2  -1  -2  -1  -2  -2   0   3    2   1   0  -1   2   6   6   9
28    9  10   9   8   8   4  -1   2    2   2   0  -4  -4  -4  -4  -3   -2  -3  -4  -6 -10 -14 -17 -14
29  -11  -9  -7  -6  -5  -5  -6  -6   -6  -6  -9 -10  -9  -7  -5  -4   -6  -3  -4  -6  -8  -9  -9 -10
30  -12 -10  -8  -4  -3  -3  -2  -1   -1  -1   7   8   7   6  17  23   21  21  21  21  17  16  17  12

31    6  -2  -4  -4  -3   0  -3  -1    0  -1   0   3   3   0  -1   1    2   1   1   0   2   4   6   7