PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-03:57:40
G08     274.7          19.7                8.0 +/-    0.83      17.6 +/-    0.83  0.200 / 0.370
G10     54.3           58.9                7.8 +/-    0.81       9.0 +/-    0.81  0.460 / 0.430
G14     255.9          63.0                9.5 +/-    0.69      10.5 +/-    0.69  0.030 / 0.040
G18     314.5          28.7                6.9 +/-    1.12      12.3 +/-    1.12  0.020 / 0.030
G20     90.6           40.0                8.4 +/-    1.18      12.2 +/-    1.18  0.120 / 0.220
G21     154.3          20.5                7.2 +/-    2.17      15.7 +/-    2.17  0.120 / 0.270
G24     42.0           13.4                5.1 +/-    3.37      13.2 +/-    3.37  0.060 / 0.050
G27     236.0          19.5                9.2 +/-    4.26      20.4 +/-    4.26  0.060 / 0.060
G31     178.3          26.5                8.6 +/-    2.10      16.2 +/-    2.10  0.150 / 0.120
G32     313.0          75.8                9.4 +/-    0.78       9.7 +/-    0.78  0.080 / 0.120