PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-19:27:40
G01     236.3          25.8               10.2 +/-    2.08      19.5 +/-    2.08  0.040 / 0.040
G03     306.9          60.1               10.0 +/-    1.08      11.3 +/-    1.08  0.030 / 0.030
G14     74.8           32.5                8.9 +/-    1.07      14.8 +/-    1.07  0.070 / 0.140
G16     156.9          31.9               13.0 +/-    0.90      21.9 +/-    0.90  0.060 / 0.140
G22     260.6          75.9               10.6 +/-    0.78      10.9 +/-    0.78  0.080 / 0.150
G23     298.3          29.4               10.3 +/-    1.43      18.4 +/-    1.43  0.130 / 0.170
G26     118.9          49.2               12.3 +/-    0.58      15.6 +/-    0.58  0.070 / 0.110
G31     41.3           43.5                7.9 +/-    1.15      10.9 +/-    1.15  0.100 / 0.110
G32     89.9           13.4               10.3 +/-    2.51      26.6 +/-    2.51  0.050 / 0.050