PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-04:42:40
G08     274.2          19.8                8.1 +/-    2.00      17.8 +/-    2.00  0.240 / 0.320
G10     54.2           59.0                5.7 +/-    1.13       6.6 +/-    1.13  0.460 / 0.410
G14     256.1          63.2                7.2 +/-    0.67       8.0 +/-    0.67  0.030 / 0.050
G18     314.5          28.8                4.8 +/-    1.04       8.6 +/-    1.04  0.030 / 0.030
G20     90.7           39.9                6.9 +/-    0.98      10.1 +/-    0.98  0.130 / 0.270
G21     154.2          20.3                6.8 +/-    1.23      14.8 +/-    1.23  0.100 / 0.270
G24     41.9           13.3                4.3 +/-    3.45      11.2 +/-    3.45  0.080 / 0.070
G27     236.1          19.6                9.3 +/-    4.40      20.6 +/-    4.40  0.080 / 0.050
G31     178.4          26.3                8.3 +/-    0.77      15.8 +/-    0.77  0.150 / 0.100
G32     311.3          75.6                7.0 +/-    0.39       7.2 +/-    0.39  0.080 / 0.130