PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-08:57:50
G01     316.1          24.6                1.9 +/-    1.74       3.7 +/-    1.74  0.080 / 0.130
G10     90.7           47.7                4.5 +/-    0.57       5.8 +/-    0.57  0.090 / 0.180
G11     295.5          26.0                3.4 +/-    1.12       6.5 +/-    1.12  0.040 / 0.040
G14     321.8          71.4                4.1 +/-    0.96       4.3 +/-    0.96  0.040 / 0.040
G18     295.4          46.5                4.2 +/-    1.27       5.6 +/-    1.27  0.060 / 0.210
G20     111.4          23.7                3.7 +/-    1.17       7.5 +/-    1.17  0.070 / 0.210
G22     305.4          18.6                3.0 +/-    1.92       6.7 +/-    1.92  0.040 / 0.060
G25     94.8           11.3              -16.1 +/-   22.35     -43.7 +/-   22.35  0.040 / 0.060
G31     173.9          49.8                5.2 +/-    0.97       6.5 +/-    0.97  0.110 / 0.360
G32     11.8           65.1                2.1 +/-    1.01       2.3 +/-    1.01  0.090 / 0.230