PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-08:13:10
G03     242.5          68.2                3.6 +/-    0.98       3.9 +/-    0.98  0.040 / 0.060
G09     304.0          20.0                6.1 +/-    3.89      13.3 +/-    3.89  0.040 / 0.070
G14     99.0           16.2                3.8 +/-    2.32       9.2 +/-    2.32  0.110 / 0.460
G16     121.5          59.2                3.7 +/-    1.22       4.2 +/-    1.22  0.130 / 0.610
G22     195.3          55.5                6.6 +/-    1.85       7.8 +/-    1.85  0.040 / 0.050
G23     319.5          49.4                1.8 +/-    1.08       2.2 +/-    1.08  0.040 / 0.060
G26     66.9           50.0                5.5 +/-    0.43       6.9 +/-    0.43  0.030 / 0.060
G31     52.8           17.7                3.4 +/-    2.46       8.0 +/-    2.46  0.040 / 0.040