PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-20:42:50
G10     262.3          34.5               17.7 +/-    1.42      28.4 +/-    1.42  0.040 / 0.060
G13     44.9           23.1               13.2 +/-    1.07      26.9 +/-    1.07  0.040 / 0.050
G15     64.4           51.7               15.5 +/-    0.68      19.2 +/-    0.68  0.190 / 0.380
G16     287.5          12.3               16.7 +/-    2.27      44.4 +/-    2.27  0.210 / 0.600
G18     292.3          63.0               16.1 +/-    0.41      17.8 +/-    0.41  0.160 / 0.320
G20     51.4           38.3               13.7 +/-    0.47      20.5 +/-    0.47  0.040 / 0.080
G21     358.0          70.2               16.5 +/-    0.39      17.4 +/-    0.39  0.050 / 0.110
G24     125.1          11.3              -17.3 +/-   26.48     -46.9 +/-   26.48  0.090 / 0.110
G27     319.7          16.8               14.5 +/-    1.37      34.5 +/-    1.37  0.060 / 0.130
G29     165.4          31.1               17.9 +/-    1.60      30.7 +/-    1.60  0.070 / 0.180