PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-20:13:00
G01     221.1          11.7               11.2 +/-    2.01      30.0 +/-    2.01  0.030 / 0.060
G03     258.0          70.8               10.6 +/-    0.46      11.2 +/-    0.46  0.030 / 0.030
G09     298.4          11.6                1.9 +/-   30.11       5.0 +/-   30.11  0.110 / 0.250
G14     93.0           20.2               10.2 +/-    1.23      22.2 +/-    1.23  0.140 / 0.220
G16     141.3          52.0               13.8 +/-    0.41      17.0 +/-    0.41  0.130 / 0.360
G22     201.4          63.4               11.2 +/-    0.28      12.3 +/-    0.28  0.140 / 0.350
G23     313.6          43.4                9.9 +/-    1.11      13.7 +/-    1.11  0.030 / 0.050
G26     83.0           54.4               10.8 +/-    0.97      12.9 +/-    0.97  0.040 / 0.060
G31     48.3           25.9                7.9 +/-    2.46      15.1 +/-    2.46  0.160 / 0.110