IRI_2001
代码说明：
说明： 电离层的延迟模型IRI-2001,输入参数为太阳黑子数，可以得到电离层VTEC的值。(Delay model of the ionosphere IRI-2001, the input parameters for the sunspot number, you can get the value of ionospheric VTEC.)
文件列表：
IRI_2001
........\AP.DAT
........\CCIR11.BIN
........\CCIR12.BIN
........\CCIR13.BIN
........\CCIR14.BIN
........\CCIR15.BIN
........\CCIR16.BIN
........\CCIR17.BIN
........\CCIR18.BIN
........\CCIR19.BIN
........\CCIR20.BIN
........\CCIR21.BIN
........\CCIR22.BIN
........\IG_SSN.ASC
........\IRIDEBUG.DAT
........\IRILOG.DAT
........\IRI_20~1.EXE
........\URSI11.BIN
........\URSI12.BIN
........\URSI13.BIN
........\URSI14.BIN
........\URSI15.BIN
........\URSI16.BIN
........\URSI17.BIN
........\URSI18.BIN
........\URSI19.BIN
........\URSI20.BIN
........\URSI21.BIN
........\URSI22.BIN
........\WORLDMAP.BIN
........\WORLDM~1.BIN
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