PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-19:57:30
G08     304.8          20.9                9.5 +/-    2.59      20.4 +/-    2.59  0.060 / 0.100
G10     339.6          61.0                9.0 +/-    1.04      10.2 +/-    1.04  0.060 / 0.090
G14     220.9          36.0               12.8 +/-    1.98      20.0 +/-    1.98  0.070 / 0.110
G18     47.8           56.5                9.4 +/-    0.58      11.1 +/-    0.58  0.060 / 0.110
G21     138.0          48.5               12.8 +/-    0.76      16.5 +/-    0.76  0.040 / 0.080
G24     70.0           30.1               10.5 +/-    0.75      18.3 +/-    0.75  0.040 / 0.070
G27     267.1          36.5               11.8 +/-    1.26      18.2 +/-    1.26  0.060 / 0.130
G32     227.9          54.7               14.0 +/-    0.78      16.7 +/-    0.78  0.050 / 0.130