PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-07:27:50
G01     229.8          20.6                5.5 +/-    2.53      11.9 +/-    2.53  0.190 / 0.220
G03     300.4          61.9                4.4 +/-    0.85       4.9 +/-    0.85  0.120 / 0.210
G14     83.1           25.7                2.7 +/-    1.75       5.2 +/-    1.75  0.080 / 0.080
G16     152.5          39.5                5.5 +/-    1.22       8.0 +/-    1.22  0.060 / 0.090
G22     229.8          74.4                5.0 +/-    0.67       5.2 +/-    0.67  0.030 / 0.030
G23     302.7          32.4                1.9 +/-    2.14       3.1 +/-    2.14  0.030 / 0.030
G26     110.0          53.0                4.6 +/-    0.57       5.6 +/-    0.57  0.180 / 0.370
G31     43.0           37.4                1.8 +/-    1.58       2.8 +/-    1.58  0.140 / 0.270
G32     95.1           10.3                3.5 +/-    1.82       9.6 +/-    1.82  0.090 / 0.130