PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-20:27:30
G03     236.5          68.6               10.2 +/-    0.66      10.9 +/-    0.66  0.110 / 0.330
G09     302.4          16.3                7.9 +/-    1.37      19.0 +/-    1.37  0.080 / 0.440
G14     98.6           16.0               11.2 +/-    1.96      27.3 +/-    1.96  0.030 / 0.050
G16     132.0          57.9               12.9 +/-    0.78      14.9 +/-    0.78  0.030 / 0.050
G22     195.1          56.5               11.7 +/-    2.03      13.7 +/-    2.03  0.050 / 0.060
G23     318.8          48.6                7.9 +/-    1.09      10.1 +/-    1.09  0.060 / 0.060
G26     71.3           52.4                9.0 +/-    0.46      11.0 +/-    0.46  0.090 / 0.190
G31     51.5           20.6                6.1 +/-    1.01      13.2 +/-    1.01  0.110 / 0.200