PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-18:27:40
G01     244.2          31.5                7.5 +/-    1.71      12.8 +/-    1.71  0.030 / 0.030
G03     313.4          52.7                7.3 +/-    0.46       8.9 +/-    0.46  0.040 / 0.040
G14     66.2           37.9                6.6 +/-    1.87      10.0 +/-    1.87  0.090 / 0.180
G16     160.8          23.9                9.9 +/-    1.77      19.9 +/-    1.77  0.090 / 0.180
G22     291.1          72.5                7.4 +/-    0.57       7.7 +/-    0.57  0.050 / 0.080
G23     292.0          24.2                7.7 +/-    0.98      15.3 +/-    0.98  0.060 / 0.090
G26     129.4          43.3               10.4 +/-    0.69      14.3 +/-    0.69  0.030 / 0.050
G31     40.3           51.5                7.2 +/-    0.79       8.9 +/-    0.79  0.050 / 0.040
G32     83.1           18.4                8.1 +/-    1.98      18.5 +/-    1.98  0.090 / 0.110