PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/06-20:57:20
G02     209.0          49.3               19.4 +/-    0.50      24.6 +/-    0.50  0.080 / 0.080
G06     101.2          79.1               17.8 +/-    0.48      18.1 +/-    0.48  0.080 / 0.130
G12     315.0          28.1               14.6 +/-    1.56      26.6 +/-    1.56  0.060 / 0.060
G17     47.1           41.0               14.5 +/-    1.99      20.7 +/-    1.99  0.050 / 0.070
G19     22.8           57.5               16.0 +/-    1.04      18.6 +/-    1.04  0.030 / 0.020
G24     279.3          42.5               16.1 +/-    1.18      22.5 +/-    1.18  0.030 / 0.020
G28     115.0          21.3               16.2 +/-    1.19      34.5 +/-    1.19  0.040 / 0.040