PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-18:42:40
G02     206.8          43.7               10.4 +/-    1.06      14.3 +/-    1.06  0.070 / 0.160
G06     136.4          77.3                8.4 +/-    0.47       8.6 +/-    0.47  0.070 / 0.130
G12     311.2          20.8                7.2 +/-    1.55      15.5 +/-    1.55  0.050 / 0.080
G17     42.7           43.9                7.4 +/-    1.74      10.2 +/-    1.74  0.060 / 0.070
G19     20.0           58.7                8.5 +/-    0.80       9.8 +/-    0.80  0.060 / 0.070
G24     286.4          41.3               12.3 +/-    3.84      17.5 +/-    3.84  0.060 / 0.070
G28     108.5          29.7                9.0 +/-    0.98      15.9 +/-    0.98  0.140 / 0.280