PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-21:58:00
G01     318.1          19.8                7.6 +/-    1.80      16.9 +/-    1.80  0.140 / 0.270
G08     254.7          11.9               10.8 +/-    2.41      28.8 +/-    2.41  0.180 / 0.320
G10     82.7           52.6                7.8 +/-    1.12       9.6 +/-    1.12  0.160 / 0.260
G11     300.8          24.5                8.7 +/-    0.86      17.2 +/-    0.86  0.180 / 0.290
G14     307.1          71.3                8.2 +/-    0.63       8.6 +/-    0.63  0.050 / 0.060
G18     104.1          26.6                8.5 +/-    1.00      16.0 +/-    1.00  0.040 / 0.070
G22     301.4          11.3                3.5 +/-   11.40       9.6 +/-   11.40  0.230 / 0.400
G25     98.2           9.4               -15.3 +/-   18.19     -43.3 +/-   18.19  0.020 / 0.020
G31     178.7          41.6               12.4 +/-    0.86      17.6 +/-    0.86  0.020 / 0.020
G32     7.1            67.0                7.0 +/-    0.40       7.5 +/-    0.40  0.040 / 0.040