PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-08:12:40
G01     40.5           15.6                3.3 +/-    2.10       8.1 +/-    2.10  0.030 / 0.030
G06     174.8          39.9                6.9 +/-    1.05      10.0 +/-    1.05  0.030 / 0.020
G13     236.2          21.5                6.1 +/-    2.06      13.0 +/-    2.06  0.090 / 0.310
G15     272.3          11.5                5.6 +/-    2.52      15.1 +/-    2.52  0.190 / 0.360
G17     9.8            67.9                5.3 +/-    0.44       5.7 +/-    0.44  0.050 / 0.050
G19     274.3          67.2                7.0 +/-    0.84       7.6 +/-    0.84  0.050 / 0.060
G24     314.6          23.8                2.0 +/-    1.07       4.0 +/-    1.07  0.120 / 0.130
G28     71.3           47.6                7.5 +/-    0.81       9.7 +/-    0.81  0.130 / 0.130
G30     155.4          28.0                7.6 +/-    1.33      13.9 +/-    1.33  0.110 / 0.250