PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-08:27:50
G01     227.4          19.4                6.2 +/-    2.22      13.8 +/-    2.22  0.110 / 0.240
G03     293.1          67.3                5.0 +/-    1.07       5.4 +/-    1.07  0.150 / 0.380
G14     83.2           26.4                3.9 +/-    1.20       7.5 +/-    1.20  0.050 / 0.100
G16     149.5          41.0                5.5 +/-    0.85       7.9 +/-    0.85  0.070 / 0.090
G22     223.6          72.6                5.8 +/-    0.87       6.1 +/-    0.87  0.040 / 0.070
G23     306.9          38.2                4.5 +/-    0.92       6.8 +/-    0.92  0.060 / 0.090
G26     104.3          53.4                5.5 +/-    0.58       6.6 +/-    0.58  0.030 / 0.040
G31     44.7           33.8                2.1 +/-    0.46       3.4 +/-    0.46  0.040 / 0.050