PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-14:27:50
G02     263.5          78.5                7.0 +/-    1.11       7.2 +/-    1.11  0.110 / 0.310
G05     170.7          20.6                8.1 +/-    0.96      17.5 +/-    0.96  0.120 / 0.290
G06     39.7           50.7                6.0 +/-    0.43       7.5 +/-    0.43  0.110 / 0.130
G12     320.8          59.3                6.2 +/-    0.81       7.1 +/-    0.81  0.070 / 0.140
G17     74.8           20.2                7.1 +/-    0.48      15.6 +/-    0.48  0.060 / 0.130
G19     64.3           32.7                6.8 +/-    0.66      11.3 +/-    0.66  0.070 / 0.150
G24     240.0          30.8                9.2 +/-    1.54      15.8 +/-    1.54  0.040 / 0.040
G25     317.1          17.0                6.5 +/-    2.01      15.4 +/-    2.01  0.040 / 0.060