PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-20:13:10
G02     69.5           25.3               21.1 +/-    1.13      41.0 +/-    1.13  0.080 / 0.220
G05     48.3           54.7               21.2 +/-    0.33      25.3 +/-    0.33  0.080 / 0.240
G12     182.5          19.2               24.6 +/-    3.70      55.1 +/-    3.70  0.070 / 0.220
G13     119.3          23.8               25.3 +/-    1.36      50.7 +/-    1.36  0.080 / 0.280
G15     157.2          22.1               25.9 +/-    1.17      54.1 +/-    1.17  0.050 / 0.090
G18     222.2          11.9                7.6 +/-   44.99      20.4 +/-   44.99  0.070 / 0.090
G20     218.6          75.3               23.2 +/-    0.91      23.9 +/-    0.91  0.060 / 0.050
G21     282.0          25.9               23.2 +/-    1.10      44.4 +/-    1.10  0.060 / 0.050
G25     217.1          39.8               23.1 +/-    0.98      33.8 +/-    0.98  0.040 / 0.040
G29     342.1          70.8               23.0 +/-    0.68      24.2 +/-    0.68  0.040 / 0.040