PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-04:42:40
G01     318.9          18.3                7.2 +/-    1.38      16.4 +/-    1.38  0.120 / 0.230
G08     256.8          12.9                8.1 +/-    3.86      21.1 +/-    3.86  0.370 / 0.300
G10     80.6           52.8                9.7 +/-    1.21      11.8 +/-    1.21  0.200 / 0.160
G11     302.4          23.5                6.7 +/-    1.49      13.7 +/-    1.49  0.160 / 0.180
G14     292.5          69.5                8.3 +/-    0.40       8.8 +/-    0.40  0.030 / 0.050
G18     304.3          40.6                7.0 +/-    1.53      10.0 +/-    1.53  0.040 / 0.050
G20     98.4           44.9               11.7 +/-    0.86      15.7 +/-    0.86  0.080 / 0.130
G22     301.1          11.4                3.9 +/-    8.66      10.6 +/-    8.66  0.060 / 0.150
G31     173.8          44.5               11.6 +/-    0.98      15.8 +/-    0.98  0.300 / 0.250
G32     12.6           65.9                7.8 +/-    0.40       8.5 +/-    0.40  0.240 / 0.320