PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-21:42:50
G10     289.4          48.4               15.3 +/-    1.56      19.7 +/-    1.56  0.070 / 0.180
G15     47.2           32.8               14.9 +/-    0.93      24.7 +/-    0.93  0.070 / 0.170
G18     346.9          66.8               15.3 +/-    0.89      16.5 +/-    0.89  0.070 / 0.190
G20     67.8           21.4               15.2 +/-    0.79      32.3 +/-    0.79  0.070 / 0.130
G21     82.8           75.1               18.8 +/-    0.98      19.4 +/-    0.98  0.050 / 0.040
G24     104.4          24.3               18.9 +/-    1.05      37.6 +/-    1.05  0.060 / 0.050
G27     304.1          32.8               15.7 +/-    2.08      26.0 +/-    2.08  0.080 / 0.240
G32     209.6          23.9               20.7 +/-    0.87      41.6 +/-    0.87  0.090 / 0.240