PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-18:43:10
G02     55.1           36.8               15.0 +/-    0.92      23.0 +/-    0.92  0.100 / 0.400
G05     74.7           69.2               16.0 +/-    1.00      17.0 +/-    1.00  0.110 / 0.350
G12     186.5          38.1               18.8 +/-    2.61      28.2 +/-    2.61  0.050 / 0.100
G13     133.8          11.6               21.4 +/-    5.49      57.8 +/-    5.49  0.040 / 0.090
G20     204.9          54.9               18.0 +/-    1.78      21.5 +/-    1.78  0.040 / 0.060
G21     267.4          15.3               14.1 +/-    1.31      34.9 +/-    1.31  0.040 / 0.060
G25     239.3          54.8               17.9 +/-    1.14      21.4 +/-    1.14  0.050 / 0.070
G29     327.9          53.5               13.6 +/-    1.31      16.4 +/-    1.31  0.060 / 0.070