PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-04:28:00
G01     228.6          19.3                8.6 +/-    3.85      19.1 +/-    3.85  0.040 / 0.030
G03     296.0          64.6                7.9 +/-    0.73       8.7 +/-    0.73  0.040 / 0.030
G14     83.4           26.9                4.9 +/-    1.26       9.1 +/-    1.26  0.080 / 0.130
G16     147.0          42.8                9.8 +/-    1.17      13.6 +/-    1.17  0.120 / 0.160
G22     227.6          72.8               10.3 +/-    0.46      10.7 +/-    0.46  0.100 / 0.110
G23     304.6          34.5                7.2 +/-    1.95      11.5 +/-    1.95  0.090 / 0.110
G26     101.4          53.3                7.4 +/-    0.95       9.0 +/-    0.95  0.220 / 0.300
G31     44.4           34.2                6.0 +/-    1.16       9.7 +/-    1.16  0.250 / 0.330