PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-17:27:50
G01     319.8          17.1                7.4 +/-    3.30      17.4 +/-    3.30  0.220 / 0.370
G08     260.2          15.6                7.1 +/-    4.92      17.4 +/-    4.92  0.190 / 0.370
G10     74.7           53.4                7.4 +/-    0.64       9.0 +/-    0.64  0.050 / 0.050
G11     309.9          17.6                4.6 +/-    2.75      10.8 +/-    2.75  0.040 / 0.050
G14     274.8          66.5                7.6 +/-    0.49       8.2 +/-    0.49  0.200 / 0.360
G20     103.3          28.8                8.6 +/-    0.93      15.4 +/-    0.93  0.130 / 0.350
G27     226.7          11.9                9.2 +/-    2.21      24.6 +/-    2.21  0.040 / 0.040
G31     177.4          36.5                9.6 +/-    1.31      14.9 +/-    1.31  0.040 / 0.040
G32     3.4            69.7                6.6 +/-    0.55       6.9 +/-    0.55  0.050 / 0.080