PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/18-18:43:10
G05     50.1           15.6               10.4 +/-    1.00      25.5 +/-    1.00  0.120 / 0.250
G10     239.3          15.0               14.1 +/-    1.76      35.1 +/-    1.76  0.090 / 0.330
G13     71.4           36.9               11.4 +/-    0.62      17.6 +/-    0.62  0.050 / 0.050
G15     115.4          54.7               13.5 +/-    0.55      16.1 +/-    0.55  0.050 / 0.060
G16     314.3          11.1               11.3 +/-    3.94      30.8 +/-    3.94  0.040 / 0.070
G18     250.6          46.5               11.1 +/-    1.61      14.7 +/-    1.61  0.050 / 0.070
G20     31.0           62.6               12.5 +/-    0.78      13.9 +/-    0.78  0.100 / 0.220
G21     319.7          52.1               13.1 +/-    0.93      16.1 +/-    0.93  0.080 / 0.230
G26     287.9          18.4               10.5 +/-    1.37      24.0 +/-    1.37  0.070 / 0.100
G29     155.7          60.9               15.3 +/-    0.72      17.2 +/-    0.72  0.060 / 0.140