PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-08:12:50
G08     271.6          19.8                5.8 +/-    1.79      12.8 +/-    1.79  0.020 / 0.020
G10     55.0           58.9                4.6 +/-    0.86       5.3 +/-    0.86  0.030 / 0.030
G14     258.1          64.4                5.4 +/-    0.62       5.9 +/-    0.62  0.140 / 0.230
G18     314.0          29.9                3.6 +/-    0.92       6.3 +/-    0.92  0.120 / 0.240
G20     91.4           39.2                4.7 +/-    1.05       6.9 +/-    1.05  0.290 / 0.330
G21     153.9          18.5                4.3 +/-    1.78       9.7 +/-    1.78  0.530 / 0.320
G24     41.2           12.2                2.0 +/-    2.70       5.4 +/-    2.70  0.110 / 0.130
G27     236.2          19.2                4.6 +/-    3.27      10.2 +/-    3.27  0.300 / 0.290
G31     179.2          25.9                4.4 +/-    1.94       8.4 +/-    1.94  0.050 / 0.050
G32     305.1          74.9                5.6 +/-    0.52       5.7 +/-    0.52  0.040 / 0.050