PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-08:42:40
G01     228.3          19.0                6.4 +/-    3.07      14.4 +/-    3.07  0.030 / 0.030
G03     294.0          65.6                5.4 +/-    1.09       5.9 +/-    1.09  0.040 / 0.030
G14     83.0           28.1                5.5 +/-    0.87      10.0 +/-    0.87  0.120 / 0.340
G16     145.9          43.6                6.1 +/-    0.84       8.4 +/-    0.84  0.200 / 0.410
G22     219.8          72.2                6.8 +/-    0.22       7.1 +/-    0.22  0.080 / 0.120
G23     306.2          36.7                5.1 +/-    1.11       7.9 +/-    1.11  0.080 / 0.160
G26     98.5           53.1                6.5 +/-    0.58       7.9 +/-    0.58  0.050 / 0.050
G31     44.9           32.3                4.0 +/-    1.26       6.7 +/-    1.26  0.040 / 0.080