PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-16:57:30
G05     46.8           23.6               10.9 +/-    1.13      21.9 +/-    1.13  0.070 / 0.240
G13     85.5           37.0               15.2 +/-    0.99      23.3 +/-    0.99  0.140 / 0.140
G15     131.2          48.0               19.1 +/-    0.54      24.7 +/-    0.54  0.060 / 0.090
G18     240.3          38.4               16.9 +/-    1.25      25.2 +/-    1.25  0.060 / 0.070
G20     18.1           73.7               13.5 +/-    0.52      14.0 +/-    0.52  0.030 / 0.040
G21     309.8          45.9               12.7 +/-    0.85      16.8 +/-    0.85  0.030 / 0.030
G25     201.6          14.9               20.3 +/-    3.07      50.6 +/-    3.07  0.070 / 0.190
G26     297.8          18.8               10.4 +/-    0.92      23.7 +/-    0.92  0.080 / 0.220
G29     145.4          72.4               16.9 +/-    1.10      17.7 +/-    1.10  0.050 / 0.090