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Table 1 Range of geophysical parameters of the input data used for the IMAZ model.

From: An extension for the model IMAZ for large absorption

  Lower quartile Median Upper quartile
Solar activity F10.7 72 109 139
Solar zenith angle χ, ° 74 89 104
Global magnetic index ap 7 15 27
Riometer absorption, dB @ 27.6 MHz, x-mode 0.16 0.29 0.56