PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-18:57:40
G10     262.9          35.0               13.2 +/-    1.42      20.9 +/-    1.42  0.100 / 0.150
G13     44.5           22.5               10.5 +/-    2.04      21.8 +/-    2.04  0.110 / 0.110
G15     63.0           50.7               13.1 +/-    0.65      16.4 +/-    0.65  0.130 / 0.370
G16     288.2          11.9               13.8 +/-    2.06      37.0 +/-    2.06  0.110 / 0.330
G18     294.7          63.7               12.2 +/-    0.53      13.5 +/-    0.53  0.040 / 0.050
G20     51.4           38.6               11.0 +/-    0.96      16.4 +/-    0.96  0.040 / 0.050
G21     2.8            71.1               12.8 +/-    0.41      13.4 +/-    0.41  0.050 / 0.080
G24     124.6          11.7               -9.0 +/-   40.21     -24.3 +/-   40.21  0.040 / 0.080
G27     319.5          17.2               10.9 +/-    0.76      25.6 +/-    0.76  0.200 / 0.500
G29     164.8          29.2               13.1 +/-    0.98      23.4 +/-    0.98  0.180 / 0.490