PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-22:27:40
G01     318.7          19.1               10.4 +/-    1.98      23.5 +/-    1.98  0.120 / 0.450
G08     254.4          12.5               14.3 +/-    2.04      37.8 +/-    2.04  0.120 / 0.430
G10     82.1           52.0               11.9 +/-    0.78      14.7 +/-    0.78  0.180 / 0.280
G11     300.9          24.4               12.6 +/-    1.77      25.0 +/-    1.77  0.200 / 0.300
G14     300.7          70.9               13.0 +/-    0.61      13.7 +/-    0.61  0.040 / 0.060
G18     302.2          42.8               12.8 +/-    1.34      17.9 +/-    1.34  0.040 / 0.060
G20     106.5          28.1               12.7 +/-    1.11      23.2 +/-    1.11  0.250 / 0.440
G22     301.3          10.5               -0.6 +/-   10.78      -1.7 +/-   10.78  0.200 / 0.400
G31     176.3          42.9               15.8 +/-    1.16      22.0 +/-    1.16  0.080 / 0.220
G32     11.2           66.2               11.6 +/-    0.58      12.6 +/-    0.58  0.110 / 0.210