PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-19:12:40
G01     244.2          31.5               10.0 +/-    1.84      16.9 +/-    1.84  0.030 / 0.040
G03     313.5          52.1                9.2 +/-    0.66      11.4 +/-    0.66  0.030 / 0.040
G14     66.4           37.6                9.0 +/-    1.00      13.6 +/-    1.00  0.050 / 0.080
G16     161.2          23.6               12.3 +/-    1.68      24.9 +/-    1.68  0.040 / 0.090
G22     291.8          72.1                8.9 +/-    0.79       9.3 +/-    0.79  0.040 / 0.040
G23     291.8          23.9                8.4 +/-    1.27      16.9 +/-    1.27  0.030 / 0.040
G26     129.9          43.2               11.4 +/-    0.46      15.8 +/-    0.46  0.090 / 0.120
G31     40.2           51.9                7.5 +/-    0.58       9.3 +/-    0.58  0.080 / 0.090
G32     83.0           18.6                8.2 +/-    1.95      18.8 +/-    1.95  0.080 / 0.190