PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-04:43:00
G01     318.9          18.3                5.2 +/-    1.23      11.9 +/-    1.23  0.170 / 0.390
G08     256.8          12.9                7.9 +/-    4.24      20.7 +/-    4.24  0.180 / 0.360
G10     80.6           52.8                8.2 +/-    0.86      10.0 +/-    0.86  0.040 / 0.060
G11     302.4          23.5                6.5 +/-    1.73      13.2 +/-    1.73  0.040 / 0.060
G14     292.5          69.5                7.0 +/-    0.68       7.4 +/-    0.68  0.110 / 0.190
G18     304.3          40.6                6.3 +/-    1.35       9.0 +/-    1.35  0.120 / 0.190
G20     98.4           44.9                9.6 +/-    1.45      12.9 +/-    1.45  0.090 / 0.250
G22     301.1          11.4                5.4 +/-    2.77      14.7 +/-    2.77  0.080 / 0.190
G31     173.8          44.5               11.3 +/-    1.14      15.3 +/-    1.14  0.040 / 0.030
G32     12.6           65.9                5.9 +/-    0.46       6.4 +/-    0.46  0.040 / 0.040