PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-22:27:50
G01     228.3          19.3               10.3 +/-    1.81      23.0 +/-    1.81  0.030 / 0.040
G03     294.8          65.5                6.0 +/-    1.11       6.5 +/-    1.11  0.030 / 0.040
G14     84.1           25.5               10.2 +/-    1.33      19.6 +/-    1.33  0.050 / 0.110
G16     149.6          41.6               12.9 +/-    0.82      18.3 +/-    0.82  0.060 / 0.110
G22     226.9          72.7                8.0 +/-    0.62       8.4 +/-    0.62  0.090 / 0.220
G23     304.0          33.4                9.0 +/-    1.58      14.7 +/-    1.58  0.090 / 0.220
G26     106.5          53.9               10.0 +/-    0.77      12.0 +/-    0.77  0.030 / 0.040
G31     43.3           38.0                5.6 +/-    0.81       8.4 +/-    0.81  0.040 / 0.040