PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-20:42:30
G08     295.6          22.9               19.5 +/-    1.18      40.0 +/-    1.18  0.100 / 0.100
G10     359.1          62.8               19.9 +/-    0.79      22.1 +/-    0.79  0.110 / 0.100
G14     227.7          44.7               27.9 +/-    2.39      37.8 +/-    2.39  0.050 / 0.080
G18     60.6           52.0               20.4 +/-    0.72      25.1 +/-    0.72  0.050 / 0.080
G21     144.0          39.7               25.7 +/-    1.47      37.6 +/-    1.47  0.070 / 0.080
G24     60.1           27.7               17.1 +/-    1.83      31.5 +/-    1.83  0.050 / 0.090
G27     256.0          32.9               23.8 +/-    2.63      39.2 +/-    2.63  0.070 / 0.100
G32     239.6          63.0               25.6 +/-    1.13      28.4 +/-    1.13  0.080 / 0.090