PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-06:58:00
G01     241.6          30.0                7.2 +/-    1.74      12.7 +/-    1.74  0.030 / 0.030
G03     313.0          51.3                5.3 +/-    1.00       6.6 +/-    1.00  0.030 / 0.030
G14     68.1           37.1                6.7 +/-    1.10      10.3 +/-    1.10  0.090 / 0.140
G16     156.2          28.2                4.4 +/-    1.94       8.0 +/-    1.94  0.090 / 0.120
G18     214.5          20.4                6.8 +/-    1.75      14.8 +/-    1.75  0.100 / 0.180
G22     285.1          73.3                5.9 +/-    0.53       6.2 +/-    0.53  0.090 / 0.150
G23     293.8          25.5                5.8 +/-    0.94      11.1 +/-    0.94  0.060 / 0.080
G26     123.5          45.6                6.0 +/-    0.94       8.0 +/-    0.94  0.060 / 0.080
G31     41.1           47.0                3.7 +/-    0.60       4.9 +/-    0.60  0.090 / 0.130
G32     85.6           15.8                4.2 +/-    2.47      10.2 +/-    2.47  0.070 / 0.140