PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/20-23:57:30
G08     295.5          23.2               12.9 +/-    0.79      26.3 +/-    0.79  0.040 / 0.030
G10     357.4          62.7               11.0 +/-    0.60      12.3 +/-    0.60  0.030 / 0.030
G14     227.2          44.8               14.7 +/-    2.15      19.9 +/-    2.15  0.040 / 0.060
G18     58.5           53.2               12.8 +/-    0.98      15.5 +/-    0.98  0.040 / 0.070
G21     143.9          42.4               13.4 +/-    0.89      18.7 +/-    0.89  0.070 / 0.090
G24     60.8           28.0               10.3 +/-    1.94      18.8 +/-    1.94  0.100 / 0.120
G27     256.5          33.2               13.9 +/-    2.44      22.9 +/-    2.44  0.080 / 0.130
G32     238.4          61.7               13.8 +/-    1.44      15.5 +/-    1.44  0.080 / 0.140