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Fig. A.2.


Example of the IGLED data file for MOSC NM and for GLE 67. The file contains a standard GLE-datafile header with the housekeeping information, followed by data arranged in ten columns: NM station name; date in YYMMDD format (only the two last digits of the year are shown, thus 031102 corresponds to 2 November 2003); time interval in UT; a quality flag; uncorrected count rate; barometric pressure; corrected count rate; percentage increase If (Eq. (1)); and detrended Id (Eq. (2)). −9999 denotes that no data are available.

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