PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-03:12:40
G01     42.1           17.7                3.1 +/-    2.21       7.2 +/-    2.21  0.040 / 0.050
G06     177.3          35.4                5.3 +/-    1.46       8.3 +/-    1.46  0.040 / 0.060
G13     240.0          23.2                6.2 +/-    2.71      12.6 +/-    2.71  0.100 / 0.090
G15     271.6          13.1                3.0 +/-    1.86       7.8 +/-    1.86  0.100 / 0.080
G17     353.9          72.4                4.6 +/-    0.96       4.8 +/-    0.96  0.030 / 0.020
G19     273.8          68.6                5.7 +/-    0.48       6.0 +/-    0.48  0.030 / 0.020
G24     317.4          17.1                0.5 +/-    9.70       1.2 +/-    9.70  0.120 / 0.260
G28     70.1           47.2                4.2 +/-    1.18       5.5 +/-    1.18  0.150 / 0.340
G30     152.9          25.2                4.7 +/-    1.27       9.1 +/-    1.27  0.310 / 0.290