PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-19:42:40
G01     243.6          31.1               14.0 +/-    1.60      24.0 +/-    1.60  0.030 / 0.040
G03     313.3          52.3               10.0 +/-    0.92      12.2 +/-    0.92  0.040 / 0.030
G14     67.1           37.1                8.5 +/-    0.55      12.9 +/-    0.55  0.090 / 0.130
G16     161.1          24.0               12.7 +/-    1.83      25.3 +/-    1.83  0.100 / 0.120
G22     290.7          72.3               11.7 +/-    0.74      12.2 +/-    0.74  0.030 / 0.050
G23     292.2          24.0               11.3 +/-    1.15      22.6 +/-    1.15  0.030 / 0.050
G26     129.5          43.6               12.6 +/-    0.97      17.3 +/-    0.97  0.070 / 0.250
G31     40.2           51.6                7.5 +/-    0.56       9.3 +/-    0.56  0.080 / 0.280
G32     83.4           18.4                9.7 +/-    0.86      22.2 +/-    0.86  0.040 / 0.100