PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-23:27:50
G03     244.2          68.8                7.6 +/-    0.85       8.0 +/-    0.85  0.040 / 0.050
G09     304.2          21.3                6.8 +/-    2.31      14.5 +/-    2.31  0.040 / 0.050
G14     97.1           19.0                7.4 +/-    1.04      16.8 +/-    1.04  0.090 / 0.300
G16     123.4          58.1                9.1 +/-    0.53      10.5 +/-    0.53  0.100 / 0.270
G22     198.7          56.6                8.2 +/-    0.94       9.6 +/-    0.94  0.040 / 0.050
G23     318.8          48.6                6.0 +/-    0.75       7.7 +/-    0.75  0.040 / 0.040
G26     70.0           51.5                5.6 +/-    0.37       6.9 +/-    0.37  0.050 / 0.060
G31     52.3           19.5                3.7 +/-    0.56       8.3 +/-    0.56  0.060 / 0.070