PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-08:13:10
G03     239.6          69.2                5.9 +/-    0.48       6.2 +/-    0.48  0.040 / 0.040
G09     302.1          16.4                3.5 +/-    1.46       8.3 +/-    1.46  0.040 / 0.050
G14     98.0           15.8                4.2 +/-    2.18      10.3 +/-    2.18  0.030 / 0.040
G16     128.9          57.3                5.6 +/-    0.44       6.5 +/-    0.44  0.050 / 0.040
G22     196.9          56.7                5.8 +/-    0.76       6.8 +/-    0.76  0.120 / 0.270
G23     321.7          51.8                4.4 +/-    0.72       5.4 +/-    0.72  0.110 / 0.360
G26     71.7           52.2                4.4 +/-    1.04       5.4 +/-    1.04  0.150 / 0.300
G31     52.1           19.2                3.1 +/-    2.14       7.0 +/-    2.14  0.150 / 0.280