PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-11:58:00
G10     265.6          36.9                4.8 +/-    0.93       7.3 +/-    0.93  0.130 / 0.390
G13     42.8           20.0                3.3 +/-    1.62       7.3 +/-    1.62  0.150 / 0.470
G15     59.2           48.2                4.5 +/-    0.55       5.8 +/-    0.55  0.120 / 0.190
G16     281.8          12.0                4.5 +/-    2.16      11.9 +/-    2.16  0.120 / 0.170
G20     50.6           40.7                3.5 +/-    0.58       5.1 +/-    0.58  0.050 / 0.080
G21     7.4            72.2                4.3 +/-    0.53       4.5 +/-    0.53  0.040 / 0.080
G24     122.1          13.3                4.3 +/-    1.97      11.2 +/-    1.97  0.130 / 0.370
G27     318.7          18.8                2.5 +/-    2.15       5.8 +/-    2.15  0.110 / 0.350
G29     167.1          30.7                5.5 +/-    0.93       9.5 +/-    0.93  0.040 / 0.100