PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-18:43:00
G02     54.8           37.1               15.7 +/-    1.37      24.0 +/-    1.37  0.070 / 0.050
G05     76.0           69.4               15.7 +/-    0.72      16.7 +/-    0.72  0.080 / 0.080
G12     186.6          38.6               17.2 +/-    0.73      25.6 +/-    0.73  0.200 / 0.460
G13     134.1          11.3               20.5 +/-    4.47      55.6 +/-    4.47  0.230 / 0.520
G20     204.7          54.4               17.9 +/-    0.81      21.5 +/-    0.81  0.040 / 0.070
G21     267.0          15.0               13.3 +/-    3.01      33.2 +/-    3.01  0.050 / 0.070
G25     240.0          55.0               16.9 +/-    2.83      20.1 +/-    2.83  0.020 / 0.020
G29     327.6          53.0               14.4 +/-    1.10      17.5 +/-    1.10  0.030 / 0.030