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

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                             AUGUST   2012
      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   -9 -10 -10  -9  -7  -6  -6  -4   -6  -6  -6  -7  -8  -6  -4  -2   -1   0   1   2   1  -3  -5  -1
 2   -1  -2  -4  -6  -4  -1   2   4    5   3   4  11  16   2 -10 -17    4  13   4  -8 -22 -20 -15 -16
 3  -17 -22 -29 -21 -20 -22 -22 -21  -21 -22 -21 -19 -19 -17 -15 -14  -15 -13 -13 -14 -16 -17 -16 -15
 4  -14 -14 -14 -15 -12 -10 -11 -11   -8  -4  -4  -3  -4  -5  -5  -9   -7   0   4   5   3  -2  -2   4
 5    6   4   2  -1  -1   0   1  -1    1   3   6   3   3   2   2   2    2   3   3   3   1  -1  -2  -4

 6   -9 -18 -22 -20 -21 -12  -9 -12  -17 -18 -14  -9  -7 -10 -10 -11   -9 -13 -17  -8  -7  -8 -14 -17
 7  -15 -11 -10  -9  -8  -9  -9  -9   -6  -4  -6  -5  -3  -1   3   3    3   3   0  -3  -3  -1   0  -4
 8  -18 -31 -34 -32 -27 -28 -24 -24  -21 -16 -17 -17 -17 -13 -10  -7   -9 -11  -7 -11  -1   1   1   0
 9   -1  -6 -11 -13 -18 -22 -24 -24  -22 -18 -18 -15 -16 -15 -13 -12   -8  -7  -1  -1  -1   3   4   2
10    5   3   0  -2  -3   1   3   2   -3  -5  -4  -2  -3  -3  -2  -1    4   6  10  11   9   7   5   2

11    1  -2  -5  -5  -2   0   2   3    1   1   2   1   3   6   8   6    6   3   2   1   3   0  -2   2
12    1   1  -2  -5 -14 -16 -10  -6   -8  -7  -4  -4  -1   5  17   9    4   7   5  -3  -9  -2   7   8
13    5   5   1   0  -2  -2  -5  -8   -6  -9  -4  -1   1   3   3  -6  -12  -8  -5  -6  -6  -4  -1   0
14   -2  -5  -5  -2  -5  -3  -5  -7   -7  -4  -5  -5  -5  -6  -7  -4   -2  -1   1   0  -1   4   2   0
15   -1  -2   0   1   0  -1   0  -1    0  -4  -3  -2   1   1   1   1   -4  -4   0   4   0  -3   0   1

16   -1  -7  -8  -1   5   5   5   2    1   5  10   9   9  11   2  -4   -5  -5 -13 -12 -13 -13 -15 -22
17  -26 -21 -22 -20 -19 -22 -19 -20  -17 -13 -11 -11 -12 -12 -14 -14  -11  -8  -5  -2  -4  -3  -3  -4
18   -9 -13 -15 -16 -12 -11 -10  -2    6   8   3  -1   0   4   7   7   10   9   2  -6 -18 -12  -8  -3
19   -6  -7  -9  -6  -4  -9  -5  -2    0   7  -2 -18 -22 -11  -5   1    2   1   1   2  -3  -8 -24 -21
20  -20 -27 -29 -19 -14 -17 -13  -8   -8  -6  -2   0  -1  -2  -6  -8   -8  -6  -8  -7  -7  -9  -7  -8

21   -9 -10  -9 -10  -9  -8  -6  -4   -3  -6 -10  -8  -7  -7  -6  -7   -6  -2   1   0  -1  -3  -6  -6
22   -8  -9  -8  -8 -10 -12  -7  -5   -2   0   3   2   0  -2  -3  -5   -3  -1  -2  -3  -2  -2  -2  -3
23   -8  -9  -7  -6  -7 -15 -18 -16  -16 -18 -24 -24 -19 -15 -14 -19  -18 -16 -13  -7  -7  -2   2   3
24    0  -4  -3  -4  -5 -10 -11 -11   -8  -4  -4   1   2   4   2   4    5   9   6   1  -8  -9  -1   1
25    7   8  14   9   3   0  -2  -8  -14 -20 -15  -7  -1   0  -2  -2   -3  -2  -7  -8 -11  -6  -2  -3

26   -3  -3  -4  -2  -1  -4  -4  -1    2  -1   1   5   2   0   5   0   -3  -6  -8  -9  -6  -5  -2  -4
27   -8  -7  -5  -5  -4  -7  -6  -7   -5  -6  -4  -2  -2  -3  -3  -5   -4  -5  -6  -4  -3  -1   1  -1
28   -4  -5  -5  -7  -9  -9  -8  -5   -4  -4  -3   0  -2  -4  -5  -5   -5  -8  -6  -5  -5  -5  -2  -2
29   -1   2   3   2   0  -2  -4  -1    0   1   1   0   1   3   2   0   -1  -3  -5  -5  -3  -3  -2   0
30    2   6   8   9  10   8   4   4    2   4   6   6   8   9   8   7    6   6   2   1   0   0  -4  -3

31   -2   2   6  11  13  10   8   7    5   4   4   2  -4  -2   1   3    6   8   9  14  16  16  16  14