PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-20:27:50
G01     242.8          31.1               11.6 +/-    2.02      19.8 +/-    2.02  0.090 / 0.130
G03     313.7          51.2                8.6 +/-    1.39      10.7 +/-    1.39  0.100 / 0.140
G14     68.2           35.6               10.2 +/-    1.09      16.1 +/-    1.09  0.050 / 0.080
G16     160.3          24.3               12.1 +/-    1.00      24.0 +/-    1.00  0.050 / 0.080
G18     212.2          20.1               10.0 +/-    1.94      22.0 +/-    1.94  0.070 / 0.280
G22     289.9          72.0               10.7 +/-    0.71      11.2 +/-    0.71  0.080 / 0.240
G23     291.5          22.3               10.1 +/-    2.07      21.0 +/-    2.07  0.050 / 0.160
G26     132.7          43.3               14.3 +/-    0.88      19.8 +/-    0.88  0.050 / 0.140
G31     39.4           55.6                8.8 +/-    0.35      10.4 +/-    0.35  0.050 / 0.040
G32     82.9           19.3               10.2 +/-    0.83      22.9 +/-    0.83  0.050 / 0.040