PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-21:57:50
G10     309.3          55.9                7.8 +/-    0.77       9.3 +/-    0.77  0.030 / 0.040
G14     211.9          15.5               15.8 +/-    2.62      38.8 +/-    2.62  0.040 / 0.040
G15     45.7           23.3                5.1 +/-    0.47      10.3 +/-    0.47  0.060 / 0.080
G20     9.6            64.3                9.3 +/-    0.41      10.2 +/-    0.41  0.060 / 0.090
G21     112.2          70.5               10.8 +/-    1.16      11.3 +/-    1.16  0.190 / 0.390
G24     92.0           28.8                8.9 +/-    0.68      16.0 +/-    0.68  0.130 / 0.350
G27     293.7          36.6               10.1 +/-    1.13      15.6 +/-    1.13  0.050 / 0.150
G32     213.0          38.4               13.2 +/-    0.61      19.8 +/-    0.61  0.050 / 0.130