PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-03:42:50
G03     246.5          69.3                3.3 +/-    1.13       3.5 +/-    1.13  0.100 / 0.270
G09     302.5          17.7                4.0 +/-    2.08       9.3 +/-    2.08  0.110 / 0.270
G14     97.0           17.7                3.0 +/-    1.10       6.9 +/-    1.10  0.140 / 0.180
G16     126.5          57.2                4.5 +/-    0.61       5.3 +/-    0.61  0.110 / 0.170
G22     199.9          58.1                4.9 +/-    0.78       5.6 +/-    0.78  0.040 / 0.040
G23     319.3          49.3                3.4 +/-    0.76       4.3 +/-    0.76  0.040 / 0.060
G26     71.5           51.8                2.5 +/-    0.40       3.1 +/-    0.40  0.050 / 0.040
G31     52.0           19.4                2.3 +/-    1.35       5.1 +/-    1.35  0.040 / 0.040