PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-04:58:10
G03     235.9          66.9                6.5 +/-    0.55       7.0 +/-    0.55  0.110 / 0.350
G09     306.6          24.7                3.5 +/-    1.54       7.0 +/-    1.54  0.120 / 0.300
G14     101.4          13.5                5.1 +/-    2.50      13.1 +/-    2.50  0.050 / 0.040
G16     118.0          60.6                6.3 +/-    0.45       7.2 +/-    0.45  0.050 / 0.040
G22     194.9          53.4                6.8 +/-    0.51       8.3 +/-    0.51  0.040 / 0.050
G23     320.5          50.3                6.4 +/-    0.77       8.0 +/-    0.77  0.040 / 0.040
G26     64.6           49.6                5.6 +/-    0.69       7.2 +/-    0.69  0.050 / 0.040
G31     53.8           17.2                3.1 +/-    3.38       7.3 +/-    3.38  0.050 / 0.050