PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-22:57:50
G07     25.7           68.2                9.3 +/-    0.33      10.0 +/-    0.33  0.240 / 0.280
G08     61.5           46.4                8.6 +/-    0.46      11.3 +/-    0.46  0.110 / 0.190
G09     179.4          50.0               11.1 +/-    0.72      14.0 +/-    0.72  0.110 / 0.110
G11     128.7          28.1                3.9 +/-    2.20       7.1 +/-    2.20  0.160 / 0.120
G18     110.9          10.2                3.1 +/-   29.77       8.5 +/-   29.77  0.040 / 0.030
G23     160.8          21.6               10.1 +/-    1.54      21.4 +/-    1.54  0.040 / 0.030
G27     41.7           19.7                7.3 +/-    1.61      16.1 +/-    1.61  0.260 / 0.280
G28     256.1          42.5               11.2 +/-    1.49      15.6 +/-    1.49  0.210 / 0.250
G30     319.3          49.9                8.6 +/-    0.79      10.9 +/-    0.79  0.040 / 0.050