PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-03:27:50
G08     275.6          19.8                6.8 +/-    1.00      15.1 +/-    1.00  0.070 / 0.140
G10     53.2           59.1                5.5 +/-    0.87       6.3 +/-    0.87  0.100 / 0.140
G14     254.6          62.4                7.1 +/-    0.71       7.9 +/-    0.71  0.030 / 0.030
G18     314.8          28.1                4.2 +/-    1.62       7.7 +/-    1.62  0.030 / 0.030
G20     90.0           40.4                6.6 +/-    1.19       9.6 +/-    1.19  0.100 / 0.210
G21     154.2          21.2                6.2 +/-    1.70      13.2 +/-    1.70  0.090 / 0.200
G24     42.3           13.9                3.8 +/-    3.06       9.7 +/-    3.06  0.050 / 0.050
G27     236.4          19.9                9.9 +/-    2.36      21.9 +/-    2.36  0.040 / 0.060
G31     178.3          25.9                7.8 +/-    1.28      14.8 +/-    1.28  0.040 / 0.030
G32     311.4          75.9                6.8 +/-    0.83       7.0 +/-    0.83  0.050 / 0.030