PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-17:27:40
G02     51.7           39.5               14.8 +/-    0.96      21.7 +/-    0.96  0.040 / 0.060
G05     86.8           70.5               14.6 +/-    0.48      15.3 +/-    0.48  0.050 / 0.060
G12     188.0          43.6               17.0 +/-    2.10      23.3 +/-    2.10  0.050 / 0.050
G20     203.3          49.3               17.1 +/-    0.75      21.7 +/-    0.75  0.060 / 0.070
G21     264.0          12.9               14.0 +/-    3.67      36.6 +/-    3.67  0.230 / 0.650
G25     249.0          57.3               16.3 +/-    0.63      18.9 +/-    0.63  0.240 / 0.500
G29     325.2          49.9               14.4 +/-    0.95      18.2 +/-    0.95  0.060 / 0.080