PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-20:42:40
G10     255.3          29.6               15.7 +/-    2.29      27.7 +/-    2.29  0.120 / 0.210
G13     50.0           28.2               10.8 +/-    0.71      19.7 +/-    0.71  0.130 / 0.300
G15     76.0           55.7               15.6 +/-    0.63      18.4 +/-    0.63  0.040 / 0.050
G16     294.4          13.5               12.1 +/-    1.05      31.1 +/-    1.05  0.050 / 0.050
G18     278.3          59.4               15.0 +/-    1.61      17.1 +/-    1.61  0.080 / 0.280
G20     46.4           44.1               14.2 +/-    1.29      19.3 +/-    1.29  0.090 / 0.310
G21     344.0          65.2               13.3 +/-    1.07      14.5 +/-    1.07  0.140 / 0.450
G26     267.0          13.1               15.1 +/-    1.21      39.2 +/-    1.21  0.170 / 0.400
G27     321.9          10.8               -8.5 +/-   33.01     -23.2 +/-   33.01  0.080 / 0.180
G29     164.1          39.2               17.9 +/-    1.05      26.4 +/-    1.05  0.060 / 0.180