PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-08:57:40
G02     212.5          57.7                7.4 +/-    0.92       8.6 +/-    0.92  0.070 / 0.110
G06     70.1           76.8                5.1 +/-    0.62       5.2 +/-    0.62  0.050 / 0.070
G12     317.6          35.6                3.3 +/-    0.96       5.1 +/-    0.96  0.040 / 0.050
G17     53.6           34.6                3.9 +/-    0.58       6.2 +/-    0.58  0.040 / 0.050
G19     36.5           50.1                3.9 +/-    0.59       5.0 +/-    0.59  0.040 / 0.050
G24     272.5          41.5                3.7 +/-    0.77       5.3 +/-    0.77  0.040 / 0.050
G28     117.0          24.3                6.1 +/-    1.54      12.1 +/-    1.54  0.080 / 0.200