PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-19:58:10
G05     50.2           15.9               13.0 +/-    1.82      31.6 +/-    1.82  0.110 / 0.230
G10     239.7          15.4               18.9 +/-    1.57      46.5 +/-    1.57  0.120 / 0.280
G13     70.8           36.8               14.7 +/-    0.36      22.6 +/-    0.36  0.040 / 0.070
G15     115.2          55.0               17.2 +/-    0.44      20.5 +/-    0.44  0.030 / 0.070
G16     313.0          11.8               11.2 +/-    1.58      30.1 +/-    1.58  0.160 / 0.650
G18     251.0          46.5               15.2 +/-    1.14      20.1 +/-    1.14  0.170 / 0.570
G20     32.1           61.5               15.3 +/-    0.75      17.1 +/-    0.75  0.090 / 0.250
G21     319.5          51.9               15.9 +/-    1.09      19.7 +/-    1.09  0.160 / 0.250
G26     286.3          18.7               13.3 +/-    1.61      30.1 +/-    1.61  0.060 / 0.100
G29     156.6          61.2               18.2 +/-    0.55      20.4 +/-    0.55  0.060 / 0.120