PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-15:27:50
G01     320.8          11.5               -2.0 +/-   34.47      -5.5 +/-   34.47  0.030 / 0.050
G08     266.5          16.5                8.7 +/-    1.96      20.9 +/-    1.96  0.040 / 0.040
G10     66.6           57.4                7.7 +/-    0.56       9.0 +/-    0.56  0.230 / 0.330
G11     310.9          17.2                6.9 +/-    1.07      16.2 +/-    1.07  0.160 / 0.320
G14     272.9          66.8                7.8 +/-    0.65       8.4 +/-    0.65  0.060 / 0.090
G27     228.5          13.3               10.4 +/-    5.12      26.9 +/-    5.12  0.060 / 0.090
G31     177.4          34.2               10.2 +/-    2.00      16.5 +/-    2.00  0.150 / 0.430
G32     351.1          72.1                8.4 +/-    0.57       8.7 +/-    0.57  0.150 / 0.340