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(The data for this month in the wdc-like format is here.)

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                                MAY   2016
      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  -1  -4  -6  -7  -9  -3  -7   -3   2   3   2   2  -3  -8 -13  -17 -15 -19 -35 -41 -33 -28 -35
 2  -36 -34 -38 -45 -37 -36 -36 -34  -33 -33 -30 -27 -23 -21 -20 -17  -25 -37 -38 -34 -35 -38 -34 -39
 3  -37 -38 -41 -42 -40 -36 -38 -37  -31 -23 -21 -21 -18 -17 -15 -16  -21 -20 -18 -18 -18 -17 -16 -17
 4  -16 -16 -17 -19 -20 -19 -18 -16  -14 -14 -16 -15 -14 -16 -18 -19  -19 -19 -18 -18 -17 -19 -18 -14
 5  -10  -6  -4  -3  -7  -9 -10 -11   -9 -15 -22 -21 -16 -15 -17 -18  -15 -18 -14 -12 -11 -12 -11 -11

 6  -12 -10 -10  -8  -9 -11 -11 -15  -14 -14 -12 -16  -6 -10 -14 -14  -15 -18 -30 -34 -35 -33 -34 -31
 7  -32 -30 -23 -18 -18 -18 -16 -15  -17 -16 -15 -16 -20 -15 -16 -16  -21 -21 -17 -12 -12 -14 -12  -5
 8   -3  -3 -25 -40 -54 -63 -69 -95  -95 -82 -79 -83 -74 -58 -44 -56  -78 -75 -72 -80 -87 -85 -74 -75
 9  -88 -75 -64 -65 -66 -60 -54 -52  -53 -54 -51 -50 -45 -39 -37 -38  -41 -42 -43 -44 -51 -57 -56 -49
10  -43 -44 -41 -40 -41 -40 -47 -49  -46 -45 -40 -39 -36 -37 -39 -39  -34 -31 -30 -30 -32 -32 -32 -34

11  -36 -36 -36 -34 -32 -29 -28 -26  -25 -25 -27 -29 -30 -29 -24 -23  -23 -24 -25 -25 -24 -22 -23 -25
12  -23 -23 -24 -22 -20 -18 -18 -20  -20 -19 -17 -18 -21 -23 -22 -19  -17 -17 -17 -17 -14 -13 -15 -17
13  -18 -20 -22 -21 -18 -16 -14 -19  -18 -18 -19 -19 -20 -20 -22 -21  -24 -26 -29 -28 -28 -23 -20 -16
14  -19 -24 -26 -27 -27 -27 -24 -14   -7 -13 -12  -3  -2  -6  -4  -4   -3  -7 -12 -11 -10  -9  -7 -21
15  -27 -26 -23 -19 -17 -16 -17 -16  -10  -5   0   5   3  -7 -17 -16  -11 -13 -16 -22 -17 -13 -12 -11

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

21   12  16  16  10   5   7  -6 -19  -27 -24 -18 -14 -12 -12 -11 -16  -13 -11 -16 -15 -18 -18 -17 -14
22   -9  -9 -10 -13 -21 -20 -18 -15  -21 -18 -16 -13 -12 -11  -5  -3   -6 -10 -12 -14 -11 -11 -12 -12
23  -10 -11 -10  -9  -7  -6  -6  -6   -7  -9  -6  -5  -6  -6  -5  -4   -4  -5  -7  -7  -8  -6  -6  -5
24   -4  -3   1   0   0  -1  -1   1   -1  -3  -6  -9  -8  -9  -6  -5   -4  -3  -2   0  -1  -3  -3  -2
25    0   1   1   2   1   1   1   0   -2  -2  -1   1   5   8   9   6    5   4   5   4   4   2   1   1

26    0  -1   4   6   6   6   6   5    8   9   6   6   8   8   9   8   11  14  14  14  12  12  15  17
27   18  16  13  11  -1  -9  -7  -2    0   4   6   1  -4  -7  -6  -7   -9 -11  -6   1   6   8   1   5
28   -1  -4  -4  -1  -3  -6 -15 -20   -6  -6  -4  -6  -5  -8  -9  -6   -7 -11 -12 -15 -17 -21 -19 -16
29  -17 -17 -10  -9  -7  -6  -3  -1   -7 -12 -10  -7  -6  -8  -6  -4   -5  -6 -11 -16 -19 -24 -25 -20
30  -20 -21 -20 -17 -16 -15 -15 -12  -15 -17 -14 -11  -8  -6  -3  -2   -2  -1   0  -3  -8 -10 -11  -8

31   -7  -5  -6  -5  -5  -5  -5  -7  -10  -8  -6   0   3   4   3  -4   -8 -11 -12  -4  -6 -16 -21 -18