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May 2026
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Date
 
Space Environment Research Center, Kyushu University 
EDst1h (Realtime Ver.) 
Unit: nT 

May 2026 
 
Universal Time 

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

  1     -48  -37  -35  -43  -56  -36  -25  -26  -27  -28  -23  -19  -17  -16  -16  -14  -16  -20  -23  -25  -20  -25  -27  -23 
  2     -21  -23  -19  -23  -25  -22  -16  -13   -8   -8   -6   -8  -11  -13   -9   -6   -6   -9  -12   -7   -9  -13  -14   -7 
  3      -6  -14  -27  -24  -35  -30  -24  -19  -13   -7   -8   -6   -3   -4   -4   -9  -12  -13  -13  -10   -9   -9  -10   -8 
  4      -7   -9  -16  -20  -20  -16    2   -5   -7   -2    4    3   -5   -7   -5   -4   -1   -3  -14  -37  -42  -47  -52  -64 
  5     -76  -90  -96  -77  -58  -55  -47  -36  -40  -37  -31  -28  -26  -24  -24  -24  -25  -24  -19  -15  -13  -15  -13   -7 

  6     -12  -12  -14  -12  -12  -12  -13  -12   -9  -11   -9   -4    2    0   -2   -2   -4   -4   -3    0    1    0   -2    0 
  7      -2   -3   -5   -6   -8   -9   -7   -6   -4   -4   -2    0    8    8    9    8    8   20   23   26   18    8    6    2 
  8      -1   -9   -9    0    0    0    0   10   22   22   10    7    5   -7  -11  -11   -9  -11   -5   -6   -4   -4   -6    4 
  9       0   -2   -4   -3   -6   -7   -7   -5   -4   -3   -4   -2    3    1   -1   -2   -3   -8   -4   -1   -2   -3   -3    0 
 10       0   -3   -5   -4   -4   -1    0   -1    2    2    3    8    7    5    2    2    1   -1   -1    3    5    3    2    5 

 11       3    1   -2   -3   -2   -6   -3   -1    0    0    2    4    5    2    0    0   -6   -1    0    1    0   -1    1    2 
 12       2    1    1    1    0   -1   -1    0    1    4    6    6    6    3    0   -2   -1   -3   -3   -1    1    3    2    3 
 13       4    4    3    2   -1    0    1   -1    2    5   10   13   18   17   16   -1  -11  -12   -6   -4    1   -2   -4   -2 
 14     -17  -24  -18  -18  -15  -10   -8   -2    2    5    7    5    3    0   -3   -2    0    1    1    0    0    2    7   12 
 15       5   -5  -14  -14   -4    0    3    4   21   22   13   15    3  -28  -39  -54  -53  -38  -24  -25  -18  -17  -39  -37 

 16     -86  -91  -70  -75  -74  -53  -39  -37  -44  -40  -39  -45  -63  -49  -47  -41  -32  -39  -35  -35  -35  -34  -36  -34 
 17     -40  -36  -30  -28  -28  -30  -22  -17  -19  -21  -26  -26  -29  -31  -27  -22  -29  -29  -22  -21  -26  -23  -22  -20 
 18     -22  -23  -22  -18  -17  -21  -16  -12  -16  -21  -20  -22  -23  -18  -30  -35  -31  -21  -17  -15  -16  -21  -23  -18 
 19     -16  -15  -14  -17  -15  -13  -23  -19   -7   -6   -3  -23  -56  -65  -68  -68  -48  -31  -43  -43  -38  -34  -30  -23 
 20     -22  -25  -31  -35  -21  -27  -30  -23  -21  -20  -17  -15  -16  -16  -16  -17  -17  -16  -14  -13  -10  -10  -12  -13 

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

 26     -30  -28  -25  -23  -20  -19  -16  -11   -8   -7   -1    3    3    1    0   -3   -2   -2   -2   -1    0   -8  -16  -10 
 27     -15  -12  -12   -7  -12  -21  -29  -28  -18  -19  -20  -15   -9  -10  -11  -12  -12  -20  -20  -14  -14  -17  -13  -16 
 28     -16  -21  -19  -13  -13  -22   -9  -10   -9  -13  -11  -14  -22  -21  -19  -20  -18  -23  -29  -26  -19  -23  -23  -19 
 29     -26  -29  -32  -31  -12  -23  -25  -29  -24  -21  -16  -18  -20  -18  -25  -27  -26  -36  -39  -38  -35  -36  -38  -34 
 30     -36  -28  -35  -36  -41  -38  -32  -26  -23  -20  -17  -14  -15  -18  -15  -15  -13  -14  -21  -23  -30  -39  -42  -39 

 31     -49  -39  -30  -31  -32  -35  -30  -26  -22  -15  -13  -14  -15  -16  -15  -15  -17  -18  -18  -18  -18  -22  -25  -28 



 
Space Environment Research Center, Kyushu University 
EDst6h (Realtime Ver.) 
Unit: nT 

May 2026 
 
Universal Time 

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

  1     -38  -43  -42  -39  -37  -35  -33  -27  -25  -23  -22  -20  -18  -16  -17  -18  -19  -20  -22  -23  -24  -24  -23  -24 
  2     -23  -22  -22  -21  -20  -18  -15  -12  -10   -9   -9   -9   -9   -9   -9   -9   -8   -8   -9  -11  -10   -9  -10  -10 
  3     -15  -19  -23  -26  -26  -24  -22  -17  -13   -9   -7   -5   -6   -6   -8   -9  -10  -11  -11  -11  -10   -9   -9   -9 
  4     -12  -13  -15  -13  -13  -11   -8   -4   -1   -2   -3   -2   -2   -3   -4   -6  -11  -17  -24  -33  -43  -52  -56  -59 
  5     -76  -77  -75  -70  -61  -52  -45  -41  -36  -33  -31  -28  -26  -25  -24  -23  -22  -20  -18  -16  -13  -12  -12  -12 

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

 11       1    0   -2   -3   -3   -3   -2   -1    0    2    2    2    2    1    0   -1   -1   -1   -1    0    1    1    1    1 
 12       1    1    1    0    0    0    1    2    3    4    4    4    3    2    0   -1   -2   -2   -1    0    1    2    3    3 
 13       3    3    2    2    1    1    1    3    5    8   11   13   12    9    4    1   -3   -5   -6   -4   -3   -5   -5   -6 
 14     -14  -15  -17  -15  -12   -8   -4   -1    2    3    4    3    2    1    0    0    0    0    1    2    4    4    5    6 
 15      -2   -4   -6   -6   -4    1    7   10   13   13    7   -3  -15  -26  -35  -39  -39  -35  -29  -27  -27  -36  -38  -43 

 16     -66  -72  -74  -67  -58  -54  -48  -42  -41  -45  -47  -47  -47  -46  -45  -41  -38  -36  -35  -36  -35  -36  -36  -36 
 17     -34  -32  -32  -29  -26  -24  -23  -22  -22  -23  -25  -27  -27  -27  -28  -27  -25  -25  -25  -24  -23  -23  -23  -22 
 18     -21  -20  -20  -19  -18  -17  -17  -18  -18  -19  -20  -22  -25  -26  -26  -25  -25  -22  -20  -19  -18  -18  -19  -19 
 19     -17  -16  -15  -16  -17  -16  -14  -12  -14  -19  -27  -37  -47  -55  -56  -54  -50  -45  -40  -37  -35  -32  -30  -27 
 20     -28  -26  -27  -28  -28  -26  -24  -23  -21  -19  -17  -17  -16  -16  -16  -16  -15  -14  -13  -12  -12  -12  -12  -12 

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

 26     -25  -25  -24  -22  -19  -16  -13  -10   -7   -3   -1    0    0    0    0   -1   -2   -2   -2   -5   -6   -8  -10  -12 
 27     -12  -11  -13  -15  -18  -19  -21  -23  -22  -18  -15  -14  -13  -12  -12  -14  -15  -15  -16  -16  -16  -15  -15  -15 
 28     -16  -16  -17  -16  -14  -13  -13  -12  -11  -13  -15  -17  -18  -19  -20  -22  -22  -22  -23  -24  -23  -23  -22  -23 
 29     -27  -25  -25  -25  -25  -24  -22  -23  -22  -21  -19  -20  -21  -22  -25  -29  -32  -34  -35  -37  -37  -36  -36  -36 
 30     -34  -35  -36  -35  -35  -33  -30  -26  -22  -19  -18  -16  -15  -15  -15  -16  -17  -19  -24  -28  -32  -37  -39  -42 

 31     -38  -36  -36  -33  -31  -29  -27  -23  -20  -17  -16  -15  -14  -15  -16  -16  -17  -17  -18  -20  -21  -22  -23  -24 




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