PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-20:57:30
G02     47.5           43.8               12.9 +/-    1.61      17.7 +/-    1.61  0.040 / 0.060
G05     99.0           71.3               12.9 +/-    0.67      13.6 +/-    0.67  0.040 / 0.060
G12     187.4          45.7               15.2 +/-    0.47      20.3 +/-    0.47  0.040 / 0.040
G20     201.6          47.2               14.2 +/-    1.00      18.5 +/-    1.00  0.050 / 0.040
G25     250.3          58.9               13.3 +/-    1.47      15.3 +/-    1.47  0.040 / 0.070
G29     321.3          45.0               11.7 +/-    0.73      15.7 +/-    0.73  0.040 / 0.060