PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-08:57:30
G01     311.6          30.2                5.1 +/-    1.33       9.0 +/-    1.33  0.070 / 0.090
G10     99.8           42.8                6.0 +/-    1.07       8.3 +/-    1.07  0.090 / 0.110
G11     287.6          27.6                4.6 +/-    1.04       8.5 +/-    1.04  0.110 / 0.110
G14     343.8          69.5                4.3 +/-    0.58       4.6 +/-    0.58  0.100 / 0.120
G18     284.6          49.7                4.0 +/-    1.43       5.1 +/-    1.43  0.040 / 0.050
G20     116.8          18.3                5.1 +/-    1.04      11.6 +/-    1.04  0.040 / 0.050
G22     308.5          24.1                3.5 +/-    1.91       7.1 +/-    1.91  0.040 / 0.050
G25     87.9           14.2                3.1 +/-    1.98       7.9 +/-    1.98  0.040 / 0.050
G31     170.5          58.3                5.4 +/-    0.75       6.3 +/-    0.75  0.040 / 0.020
G32     23.8           59.8                5.1 +/-    1.36       5.8 +/-    1.36  0.030 / 0.020