PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-17:57:50
G08     286.8          23.8               11.8 +/-    1.14      23.8 +/-    1.14  0.050 / 0.120
G10     18.3           62.9               10.9 +/-    0.43      12.1 +/-    0.43  0.060 / 0.110
G14     233.8          50.8               16.6 +/-    2.39      20.7 +/-    2.39  0.030 / 0.030
G20     71.4           49.7               11.5 +/-    0.56      14.5 +/-    0.56  0.030 / 0.030
G21     148.1          33.3               15.1 +/-    1.46      24.7 +/-    1.46  0.070 / 0.080
G24     49.1           20.1                8.0 +/-    1.00      17.6 +/-    1.00  0.080 / 0.070
G27     252.6          29.6               12.0 +/-    1.19      21.2 +/-    1.19  0.100 / 0.150
G32     254.7          70.4               11.8 +/-    0.87      12.4 +/-    0.87  0.110 / 0.190