PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-17:57:20
G02     47.9           43.6               14.0 +/-    0.62      19.2 +/-    0.62  0.120 / 0.580
G05     86.5           70.0               13.9 +/-    0.49      14.6 +/-    0.49  0.120 / 0.560
G12     183.9          41.6               15.6 +/-    1.07      22.2 +/-    1.07  0.030 / 0.030
G21     263.0          10.5               -3.5 +/-   24.68      -9.7 +/-   24.68  0.020 / 0.030
G25     252.0          57.8               14.7 +/-    0.44      17.0 +/-    0.44  0.050 / 0.070
G29     320.9          43.9               13.8 +/-    0.80      18.9 +/-    0.80  0.080 / 0.080