I_Cheon.      ic TEC   glat = 37.1 glon =127.5
Date of issue: 2025.04.02 Time:14UT
YYMMDD|UT 0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23
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250401  409  489  581  653  678  641  569  507  463  440  394  330  270  238  240  240  219  236  240  206  174  190  280  383
250402  447  506  566  631  672  662  612  564  534  498  430  345  280  252  245  239  234  237  236  219  198  211  276  369