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October 2025
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Date
 
Space Environment Research Center, Kyushu University 
EDst1h (Realtime Ver.) 
Unit: nT 

October 2025 
 
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     -73  -84 -101 -100  -68  -71  -93  -79  -58  -57  -57  -52  -48  -61  -67  -83  -64  -62  -52  -52  -53  -50  -53  -56 
  2     -55  -62 -101 -102  -85  -66  -96  -80  -56  -62  -65  -63  -91  -86  -82  -64  -56  -53  -51  -49  -33  -31  -31  -42 
  3     -53  -50  -64  -67  -70  -59  -44  -56  -59  -52  -42  -53  -46  -53  -45  -51  -41  -37  -32  -29  -29  -38  -41  -35 
  4     -34  -42  -54  -55  -51  -53  -52  -49  -44  -40  -42  -42  -50  -54  -72  -61  -42  -32  -31  -40  -28  -29  -33  -32 
  5     -32  -34  -41  -43  -46  -51  -46  -37  -35  -37  -34  -36  -32  -24  -25  -30  -26  -20  -19  -20  -18  -18  -21  -19 

  6     -13  -18  -18  -20  -23  -28  -28  -28  -25  -24  -20  -18  -11   -9  -11  -13  -20  -24  -19  -13  -10  -14  -16  -12 
  7     -13  -23  -39  -33  -39  -38  -35  -32  -28  -20  -26  -30  -44  -70  -58  -55  -51  -46  -38  -31  -31  -24  -28  -25 
  8     -31  -38  -50  -57  -49  -53  -36  -32  -32  -33  -34  -38  -50  -42  -45  -41  -40  -37  -36  -28  -19  -14  -13   -9 
  9      -6   -9  -12  -17  -22  -24  -20  -16  -15   -7    4    8   13   15   14    9    7    1   -1   -4   -5  -12  -18  -16 
 10     -18  -31  -37  -40  -29  -32  -37  -21  -18  -16  -12   -9   -7   -8  -10  -11  -12  -11   -8   -7   -6   -8   -8   -5 

 11      -1   -9  -13  -11  -17  -13   -6  -18  -24  -10  -17  -16   -9  -19  -36  -39  -31  -23  -19  -14   -5    0  -12   -5 
 12      -5  -19  -24  -11  -36  -31  -29  -28  -19  -12   -9  -22  -42  -38  -27  -30  -38  -22  -29  -19  -23  -31  -28  -24 
 13     -41  -30  -38  -33  -27  -40  -38  -35  -23  -26  -24  -24  -22  -23  -24  -22  -20  -19  -13  -15  -11   -8  -10  -12 
 14     -12  -15  -17  -19  -23  -22  -17  -18  -10  -11   -9   -5    0   -1   -2   -5  -11  -11   -4   -2   -3   -2   -4   -6 
 15      -1  -14  -18  -32  -23  -14  -24  -24  -23  -16  -16  -15   -8  -10   -7   -7   -6   -6   -6   -4   -4   -4   -7   -6 

 16      -1   -5   -7   -8   -8  -10   -9   -9  -10   -6   -3   -4    5    3    4    4    5    2    1    1    0    0    0    1 
 17       8    5    2    4    4   -3   -5   -2    5   13   18   11   -9    5   12    6    4    4    6    6    9    3    6    6 
 18       3   -2    8    5   -9  -11  -22  -39  -36  -12  -15  -26  -46  -36  -28  -23  -25  -29  -25  -55  -56  -35  -49  -41 
 19     -51  -61  -62  -72  -71  -69  -50  -49  -47  -46  -35  -33  -36  -38  -37  -30  -28  -26  -31  -33  -27  -21  -21  -22 
 20     -26  -29  -35  -36  -38  -38  -32  -24  -22  -22  -21  -20  -14  -15  -16  -19  -16  -13  -14  -12  -10  -10  -18  -23 

 21     -14  -16  -28  -34  -32  -26  -27  -19  -15  -16  -12  -10   -2   -3   -4   -7   -8   -5   -5   -4   -4  -10   -8   -8 
 22      -4   -7   -9  -10  -12  -13  -14  -13   -9   -5   -4   -2    5    4    6    5    4    1   -3   -2    7    7    1   -1 
 23       3   -1   -1   -7   -8  -11  -10   -7   -4   -2    1    2    7    0    0    2    5    7    7    7    6    5    2    4 
 24       5    1   -7   -7   -9  -11   -9   -8   -6   -7   -6   -6   -4   -7   -4   -5    1    2   -4    1   -6   -2   -2   -1 
 25       2   -6  -11   -8   -6   -8  -19  -11   -9   -9   -5   -7    1   -1   -1  -11   -7   -2   -1    1    2    3    2    2 

 26       7    3    5    7    2   -4   -3   -4    2    4    5    4   11   10    9    8    4    2    5    6    7    8    5    5 
 27      10    7  999  999  999  999  999  999  999  999   15   13   16   18   17   20   24   23   10    4    5    3    6    2 
 28       1    4    1   -3   -7  -19  -18   -4    1   10    6    2    5   -4    0    0   -4   -5   -4   12   -6  -16   -2  -16 
 29     -19  -14  -12  -18  -22  -22   -9  -18    3    3   -2  -12   -6   -2   -7   -5   -8  -18  -42  -23  -27  -23  -15  -19 
 30     -49  -47  -35  -26  -16  -25  -24  -25  -14  -14  -40  -55  -91 -101 -107 -105  -68  -67  -67  -52  -47  -47  -41  -33 

 31     -40  -39  -40  -44  -48  -49  -37  -41  -28  -24  -30  -51  -47  -42  -54  -49  -26  -35  -43  -35  -33  -29  -27  -25 



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

October 2025 
 
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     -79  -82  -83  -86  -85  -78  -71  -69  -66  -58  -55  -57  -61  -62  -64  -65  -63  -61  -56  -54  -53  -53  -53  -53 
  2     -72  -77  -79  -85  -88  -81  -74  -71  -70  -69  -70  -75  -75  -74  -72  -65  -59  -51  -46  -41  -40  -40  -38  -39 
  3     -51  -58  -61  -59  -60  -59  -57  -52  -51  -51  -51  -49  -48  -48  -45  -43  -39  -36  -34  -34  -34  -34  -36  -37 
  4     -44  -46  -49  -51  -52  -51  -48  -47  -45  -45  -45  -50  -53  -53  -52  -48  -46  -39  -34  -32  -32  -32  -31  -32 
  5     -36  -38  -41  -43  -44  -43  -42  -40  -37  -35  -33  -31  -30  -29  -26  -24  -23  -22  -20  -19  -19  -18  -18  -18 

  6     -18  -19  -20  -22  -24  -26  -26  -26  -24  -21  -18  -15  -14  -14  -15  -16  -17  -16  -17  -16  -14  -13  -13  -14 
  7     -23  -27  -31  -34  -36  -34  -32  -30  -29  -30  -37  -42  -47  -52  -54  -53  -47  -42  -37  -33  -29  -28  -28  -27 
  8     -38  -42  -47  -47  -46  -43  -39  -37  -34  -36  -38  -40  -42  -43  -42  -40  -38  -33  -29  -25  -20  -15  -12  -11 
  9     -11  -13  -15  -17  -18  -19  -17  -13   -7   -2    3    8   11   11   10    8    4    1   -2   -7  -10  -12  -14  -16 
 10     -27  -29  -32  -34  -33  -29  -26  -23  -19  -14  -12  -11  -10  -10  -10  -10  -10   -9   -9   -8   -7   -6   -5   -5 

 11      -8  -10  -11  -12  -13  -15  -15  -15  -15  -16  -16  -18  -23  -25  -26  -28  -27  -22  -15  -12   -9   -7   -5   -6 
 12     -13  -17  -21  -25  -26  -26  -26  -21  -20  -22  -24  -25  -28  -33  -33  -31  -27  -27  -27  -25  -26  -27  -29  -31 
 13     -32  -32  -35  -34  -35  -33  -31  -31  -28  -26  -24  -24  -23  -23  -22  -20  -19  -17  -14  -13  -11  -11  -10  -10 
 14     -14  -16  -18  -19  -19  -18  -17  -15  -12   -9   -6   -5   -4   -4   -5   -6   -6   -6   -6   -4   -4   -3   -3   -3 
 15     -13  -16  -18  -21  -23  -23  -21  -19  -19  -17  -15  -12  -11   -9   -7   -7   -6   -5   -5   -5   -5   -5   -5   -5 

 16      -6   -6   -7   -8   -9   -9   -9   -8   -7   -4   -3    0    1    3    4    3    3    2    1    1    0    1    2    2 
 17       3    4    3    1    0    0    2    4    6    6    7    8    7    5    4    6    6    6    5    6    6    6    5    5 
 18       4    2   -1   -5  -11  -19  -21  -22  -25  -29  -28  -27  -29  -31  -31  -28  -31  -36  -38  -41  -44  -48  -46  -44 
 19     -56  -60  -65  -64  -62  -60  -55  -50  -44  -41  -39  -37  -35  -33  -32  -32  -31  -29  -28  -26  -26  -25  -23  -22 
 20     -28  -31  -34  -35  -34  -32  -29  -27  -24  -21  -19  -18  -18  -17  -15  -15  -15  -14  -12  -13  -14  -14  -15  -16 

 21     -22  -25  -25  -27  -28  -26  -23  -19  -17  -12  -10   -8   -6   -6   -5   -6   -6   -6   -6   -6   -7   -6   -7   -8 
 22      -8   -9   -9  -11  -12  -12  -11  -10   -8   -5   -2    1    2    4    4    3    2    2    2    2    2    2    3    3 
 23      -1   -3   -4   -6   -7   -8   -7   -5   -3   -1    1    1    2    3    4    4    5    6    6    6    5    5    4    4 
 24      -1   -3   -5   -7   -9   -9   -9   -8   -7   -6   -6   -6   -5   -4   -3   -3   -1   -2   -1   -2   -2   -1   -2   -1 
 25      -5   -5   -7  -10  -11  -10  -10  -10  -10   -6   -5   -4   -4   -4   -4   -4   -4   -3   -1    1    2    3    3    4 

 26       4    4    3    2    0    0   -1    0    1    4    6    7    8    8    7    6    6    5    5    6    6    7    7    7 
 27       7    7    8    7  999  999  999   15   14   15   16   16   17   18   20   19   17   15   12    9    5    4    4    3 
 28       2    0   -4   -7   -8   -8   -7   -4   -1    3    3    3    1    0   -1   -3    0   -1   -4   -4   -5   -8  -12  -13 
 29     -13  -17  -18  -16  -17  -14  -11   -7   -6   -5   -2   -4   -5   -7   -8  -14  -17  -20  -23  -25  -25  -25  -26  -25 
 30     -31  -31  -32  -29  -25  -22  -19  -24  -29  -40  -52  -68  -83  -88  -90  -86  -78  -68  -58  -54  -48  -43  -42  -40 

 31     -39  -41  -43  -43  -43  -41  -38  -35  -35  -37  -37  -41  -46  -45  -42  -42  -40  -37  -34  -34  -32  -29  -28  -27 




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