PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-18:27:50
G02     80.3           16.0               17.1 +/-    0.98      41.4 +/-    0.98  0.050 / 0.140
G05     44.5           40.1               15.6 +/-    1.00      22.6 +/-    1.00  0.070 / 0.090
G13     106.1          31.5               19.7 +/-    0.99      33.5 +/-    0.99  0.110 / 0.170
G15     148.0          33.9               20.6 +/-    0.40      33.3 +/-    0.40  0.110 / 0.180
G18     228.5          23.9               19.3 +/-    2.34      38.7 +/-    2.34  0.100 / 0.260
G20     288.1          85.6               17.6 +/-    1.14      17.7 +/-    1.14  0.130 / 0.300
G21     293.7          34.7               17.5 +/-    1.47      28.0 +/-    1.47  0.060 / 0.160
G25     209.7          28.6               19.8 +/-    2.36      35.6 +/-    2.36  0.060 / 0.140
G26     313.2          14.1               10.8 +/-   23.24      27.6 +/-   23.24  0.040 / 0.040
G29     31.5           84.5               17.3 +/-    0.78      17.3 +/-    0.78  0.040 / 0.040