PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-21:57:40
G01     319.0          19.5                8.6 +/-    1.94      19.1 +/-    1.94  0.040 / 0.040
G08     259.5          13.8               12.1 +/-    3.15      30.9 +/-    3.15  0.040 / 0.050
G10     80.1           51.7               11.8 +/-    0.55      14.6 +/-    0.55  0.110 / 0.450
G11     305.5          20.9                8.9 +/-    2.34      19.1 +/-    2.34  0.120 / 0.350
G14     285.7          68.6               11.8 +/-    0.44      12.5 +/-    0.44  0.170 / 0.280
G20     105.8          27.8               12.3 +/-    0.99      22.5 +/-    0.99  0.100 / 0.310
G31     175.0          42.0                6.3 +/-    0.89       8.8 +/-    0.89  0.040 / 0.070
G32     8.6            67.5               10.1 +/-    0.81      10.8 +/-    0.81  0.050 / 0.060