PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-20:27:40
G10     254.7          30.2               15.6 +/-   31.88      27.2 +/-   31.88  0.050 / 0.050
G13     49.5           26.9               13.8 +/-   33.03      25.8 +/-   33.03  0.050 / 0.060
G15     85.6           59.6               18.8 +/-   32.77      21.4 +/-   32.77  0.150 / 0.540
G16     290.5          15.2                5.8 +/-    5.03      14.4 +/-    5.03  0.140 / 0.520
G20     276.3          53.7               18.8 +/-   33.09      22.7 +/-   33.09  0.080 / 0.330
G21     340.2          63.4                5.8 +/-    2.71       6.4 +/-    2.71  0.070 / 0.180
G26     263.4          13.6                6.4 +/-   14.78      16.6 +/-   14.78  0.040 / 0.310
G29     165.9          45.3                4.6 +/-   15.09       6.2 +/-   15.09  0.030 / 0.050