PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-20:42:40
G02     51.3           40.5               13.3 +/-    1.03      19.1 +/-    1.03  0.060 / 0.070
G05     85.3           70.7               13.9 +/-    0.53      14.6 +/-    0.53  0.100 / 0.070
G12     186.5          41.2               14.1 +/-    1.69      20.1 +/-    1.69  0.040 / 0.060
G20     203.0          51.8               14.8 +/-    1.51      18.3 +/-    1.51  0.050 / 0.060
G21     264.3          12.3               15.0 +/-    3.13      39.7 +/-    3.13  0.230 / 0.610
G25     242.6          56.7               14.1 +/-    0.89      16.5 +/-    0.89  0.190 / 0.610
G29     324.3          49.0               13.0 +/-    0.91      16.6 +/-    0.91  0.020 / 0.040