PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-19:27:50
G05     47.5           21.7                6.3 +/-    1.75      13.2 +/-    1.75  0.060 / 0.090
G13     79.0           36.2                9.7 +/-    0.94      15.0 +/-    0.94  0.050 / 0.080
G15     136.5          49.3                9.0 +/-    0.77      11.4 +/-    0.77  0.140 / 0.350
G16     315.9          11.8                4.5 +/-    8.81      12.1 +/-    8.81  0.130 / 0.410
G20     245.6          34.8                9.5 +/-    1.38      15.1 +/-    1.38  0.210 / 0.220
G21     310.8          45.3                7.7 +/-    1.07      10.4 +/-    1.07  0.170 / 0.220
G25     199.0          12.0                8.9 +/-    3.53      23.7 +/-    3.53  0.170 / 0.280
G26     290.0          20.5               10.0 +/-    1.20      21.8 +/-    1.20  0.120 / 0.380
G29     152.7          76.2                8.8 +/-    1.60       9.0 +/-    1.60  0.080 / 0.100