PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-21:57:50
G01     318.9          18.6                6.9 +/-    1.16      15.7 +/-    1.16  0.190 / 0.220
G08     254.9          12.8               10.5 +/-    2.45      27.5 +/-    2.45  0.180 / 0.240
G10     81.2           52.3                9.3 +/-    0.36      11.4 +/-    0.36  0.040 / 0.050
G11     301.4          24.1                9.8 +/-    1.36      19.6 +/-    1.36  0.040 / 0.040
G14     299.1          70.9               10.0 +/-    0.77      10.6 +/-    0.77  0.180 / 0.380
G18     302.7          42.6                9.6 +/-    1.08      13.4 +/-    1.08  0.230 / 0.470
G20     106.0          28.5                9.6 +/-    1.05      17.4 +/-    1.05  0.100 / 0.220
G31     176.7          41.9               13.0 +/-    1.11      18.3 +/-    1.11  0.080 / 0.280
G32     9.7            66.8                8.4 +/-    0.73       9.0 +/-    0.73  0.040 / 0.100