PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-18:58:00
G05     50.0           14.8                8.7 +/-    2.10      21.7 +/-    2.10  0.050 / 0.070
G10     239.0          17.6               13.0 +/-    1.41      30.3 +/-    1.41  0.060 / 0.060
G13     68.8           34.5               11.3 +/-    0.78      18.0 +/-    0.78  0.070 / 0.120
G15     117.1          55.2               12.4 +/-    0.59      14.8 +/-    0.59  0.070 / 0.130
G16     309.5          14.2                8.3 +/-    1.43      21.2 +/-    1.43  0.150 / 0.380
G20     253.4          41.5               13.6 +/-    1.42      19.3 +/-    1.42  0.110 / 0.340
G21     317.5          49.3               12.2 +/-    0.89      15.5 +/-    0.89  0.040 / 0.050
G26     282.7          19.6                9.4 +/-    1.53      21.0 +/-    1.53  0.030 / 0.050
G29     156.9          67.8               13.2 +/-    0.94      14.1 +/-    0.94  0.130 / 0.240