PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-07:42:40
G08     278.0          21.6                2.2 +/-    2.32       4.6 +/-    2.32  0.080 / 0.240
G10     42.7           60.9                3.5 +/-    0.40       4.0 +/-    0.40  0.100 / 0.240
G14     247.2          59.8                4.0 +/-    1.38       4.5 +/-    1.38  0.090 / 0.190
G18     316.1          24.5                2.1 +/-    2.84       4.1 +/-    2.84  0.100 / 0.210
G20     84.7           43.2                4.9 +/-    1.18       6.8 +/-    1.18  0.030 / 0.030
G21     152.4          24.6                5.6 +/-    1.73      11.0 +/-    1.73  0.030 / 0.030
G24     44.4           16.5                2.1 +/-    0.77       5.1 +/-    0.77  0.050 / 0.080
G27     241.3          23.3                5.4 +/-    1.69      10.9 +/-    1.69  0.040 / 0.080
G31     180.4          19.9                4.9 +/-    2.06      10.8 +/-    2.06  0.100 / 0.200
G32     281.2          73.7                3.8 +/-    0.62       4.0 +/-    0.62  0.100 / 0.250