PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/23-21:13:10
G01     318.8          19.9                9.1 +/-    2.60      20.0 +/-    2.60  0.170 / 0.310
G08     258.6          13.6                9.2 +/-    1.03      23.6 +/-    1.03  0.160 / 0.320
G10     80.8           51.4                7.6 +/-    0.58       9.4 +/-    0.58  0.030 / 0.060
G11     305.3          20.9               10.0 +/-    3.09      21.6 +/-    3.09  0.040 / 0.060
G14     285.9          68.5                1.1 +/-    0.79       1.2 +/-    0.79  0.190 / 0.280
G20     106.2          27.2                8.1 +/-    1.26      15.1 +/-    1.26  0.200 / 0.320
G31     175.1          42.3               11.2 +/-    1.02      15.7 +/-    1.02  0.040 / 0.040
G32     9.9            67.1                7.0 +/-    1.07       7.6 +/-    1.07  0.040 / 0.040