PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-08:27:40
G03     250.7          69.2                7.5 +/-    1.21       8.0 +/-    1.21  0.030 / 0.040
G09     302.3          17.8                5.0 +/-    3.64      11.6 +/-    3.64  0.040 / 0.050
G14     96.6           18.2                3.8 +/-    2.49       8.8 +/-    2.49  0.130 / 0.220
G16     126.9          57.2                8.1 +/-    0.47       9.4 +/-    0.47  0.140 / 0.290
G22     197.1          58.4                7.4 +/-    0.66       8.6 +/-    0.66  0.040 / 0.060
G23     317.5          47.4                6.5 +/-    1.42       8.5 +/-    1.42  0.060 / 0.060
G26     71.2           51.4                7.3 +/-    0.58       9.1 +/-    0.58  0.030 / 0.050
G31     51.4           19.9                4.8 +/-    2.98      10.7 +/-    2.98  0.030 / 0.040