PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-19:28:00
G01     236.3          25.8               10.1 +/-    1.72      19.4 +/-    1.72  0.070 / 0.130
G03     306.9          60.1                8.3 +/-    1.36       9.4 +/-    1.36  0.060 / 0.140
G14     74.8           32.5                9.3 +/-    1.23      15.5 +/-    1.23  0.030 / 0.030
G16     156.9          31.9               11.8 +/-    1.09      19.9 +/-    1.09  0.030 / 0.040
G22     260.6          75.9                9.3 +/-    1.16       9.6 +/-    1.16  0.090 / 0.130
G23     298.3          29.4                7.7 +/-    1.91      13.7 +/-    1.91  0.080 / 0.120
G26     118.9          49.2               11.4 +/-    1.98      14.5 +/-    1.98  0.090 / 0.190
G31     41.3           43.5                7.5 +/-    0.88      10.3 +/-    0.88  0.090 / 0.150
G32     89.9           13.4               10.2 +/-    1.28      26.5 +/-    1.28  0.040 / 0.060