PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-01:57:30
G02     54.8           36.4                8.6 +/-    0.76      13.3 +/-    0.76  0.200 / 0.500
G05     68.1           64.8               10.1 +/-    0.33      11.0 +/-    0.33  0.240 / 0.380
G12     185.7          39.3               12.7 +/-    1.02      18.6 +/-    1.02  0.060 / 0.100
G13     133.3          10.8                2.7 +/-   31.02       7.5 +/-   31.02  0.050 / 0.090
G21     265.9          12.8               12.6 +/-    1.79      32.9 +/-    1.79  0.190 / 0.550
G25     249.0          55.7               11.1 +/-    1.20      13.1 +/-    1.20  0.210 / 0.540
G29     323.5          47.7                9.2 +/-    1.19      12.0 +/-    1.19  0.070 / 0.100