PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-08:27:50
G01     319.8          16.5                4.7 +/-    4.20      11.1 +/-    4.20  0.280 / 0.310
G08     260.1          14.7                5.2 +/-    1.84      13.1 +/-    1.84  0.240 / 0.350
G10     76.5           53.4                2.7 +/-    1.20       3.3 +/-    1.20  0.270 / 0.240
G11     304.9          22.1                2.5 +/-    1.90       5.3 +/-    1.90  0.140 / 0.280
G14     289.5          70.6                3.8 +/-    0.80       4.0 +/-    0.80  0.040 / 0.040
G18     306.1          40.0                3.9 +/-    2.74       5.7 +/-    2.74  0.040 / 0.030
G20     103.3          30.8                3.2 +/-    1.44       5.5 +/-    1.44  0.040 / 0.040
G27     227.0          11.0                5.0 +/-    2.75      13.6 +/-    2.75  0.050 / 0.040
G31     176.5          38.9                4.5 +/-    1.04       6.6 +/-    1.04  0.100 / 0.180
G32     350.1          71.2                3.9 +/-    1.00       4.1 +/-    1.00  0.080 / 0.170