PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-01:42:30
G02     39.1           50.3               10.8 +/-    1.37      13.5 +/-    1.37  0.030 / 0.040
G05     123.2          66.5               12.6 +/-    0.55      13.6 +/-    0.55  0.040 / 0.040
G06     57.2           11.2                8.1 +/-    1.93      22.0 +/-    1.93  0.030 / 0.030
G12     193.1          61.3               14.0 +/-    0.87      15.8 +/-    0.87  0.020 / 0.030
G25     288.5          55.9                9.2 +/-    1.49      10.9 +/-    1.49  0.100 / 0.180
G29     310.9          31.6               12.0 +/-    1.70      20.3 +/-    1.70  0.130 / 0.230