PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-21:13:10
G05     45.7           29.2               18.8 +/-    1.33      33.4 +/-    1.33  0.040 / 0.080
G13     89.5           36.7               24.8 +/-    0.84      38.1 +/-    0.84  0.040 / 0.080
G15     136.9          45.4               27.0 +/-    0.82      36.2 +/-    0.82  0.120 / 0.240
G18     237.8          34.8               24.6 +/-    1.47      39.2 +/-    1.47  0.130 / 0.230
G20     19.2           74.5               21.6 +/-    0.60      22.4 +/-    0.60  0.080 / 0.200
G21     305.2          42.1               22.3 +/-    1.02      31.3 +/-    1.02  0.110 / 0.240
G25     201.0          15.8               28.3 +/-    3.04      68.9 +/-    3.04  0.060 / 0.050
G26     299.4          19.0               20.6 +/-    2.00      46.5 +/-    2.00  0.050 / 0.040
G29     142.3          78.4               24.5 +/-    0.61      25.0 +/-    0.61  0.040 / 0.100