PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-14:27:30
G03     217.5          65.3               10.3 +/-    0.68      11.2 +/-    0.68  0.080 / 0.370
G07     251.1          14.2                6.8 +/-    3.13      17.2 +/-    3.13  0.100 / 0.260
G09     304.6          19.3                6.0 +/-    1.48      13.5 +/-    1.48  0.130 / 0.360
G14     102.0          11.8                9.0 +/-    1.59      24.1 +/-    1.59  0.180 / 0.370
G16     129.0          59.8               11.1 +/-    0.62      12.6 +/-    0.62  0.100 / 0.180
G22     187.4          48.2               10.5 +/-    0.59      13.6 +/-    0.59  0.100 / 0.220
G23     321.5          51.4                8.7 +/-    0.91      10.8 +/-    0.91  0.060 / 0.040
G26     68.1           52.2                7.3 +/-    0.87       9.0 +/-    0.87  0.040 / 0.050
G31     53.6           18.0                6.3 +/-    2.17      14.4 +/-    2.17  0.040 / 0.060