PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-03:27:20
G02     39.1           50.2                5.6 +/-    1.21       7.0 +/-    1.21  0.040 / 0.020
G05     124.3          66.1                6.9 +/-    0.41       7.4 +/-    0.41  0.040 / 0.020
G06     56.7           12.3                3.4 +/-    0.61       9.0 +/-    0.61  0.030 / 0.010
G12     195.0          62.5                7.9 +/-    0.42       8.8 +/-    0.42  0.030 / 0.010
G25     289.9          55.5                6.3 +/-    0.88       7.5 +/-    0.88  0.110 / 0.050
G29     310.7          31.5                7.0 +/-    1.54      11.8 +/-    1.54  0.130 / 0.080