PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-19:43:10
G02     57.2           35.3               18.5 +/-    1.34      29.2 +/-    1.34  0.050 / 0.070
G05     69.1           68.4               21.2 +/-    0.29      22.6 +/-    0.29  0.070 / 0.070
G12     185.6          34.6               26.6 +/-    1.13      42.5 +/-    1.13  0.040 / 0.090
G13     131.6          13.6               30.8 +/-    1.87      79.3 +/-    1.87  0.080 / 0.100
G20     206.1          58.6               25.5 +/-    0.47      29.3 +/-    0.47  0.310 / 0.410
G21     269.6          16.7               23.5 +/-    5.36      56.1 +/-    5.36  0.180 / 0.330
G25     233.5          52.6               24.3 +/-    3.01      29.7 +/-    3.01  0.030 / 0.030
G29     329.5          55.7               20.1 +/-    0.88      23.8 +/-    0.88  0.030 / 0.030