Fairford.     ff TEC   glat = 51.7 glon =358.2
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  172  166  157  145  130  144  205  280  352  408  471  535  560  535  498  469  440  411  385  336  276  238  207  189
250402  152  145  137  125  115  129  173  236  298  349  392  432  461  468  453  432  415  400  375  335  285  236  196  168