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                1.2 +/-    1.80       2.8 +/-    1.80  0.040 / 0.040
G08     260.1          14.7                5.5 +/-    2.02      13.9 +/-    2.02  0.040 / 0.050
G10     76.5           53.4                3.2 +/-    0.64       3.9 +/-    0.64  0.110 / 0.220
G11     304.9          22.1                1.2 +/-    2.32       2.5 +/-    2.32  0.100 / 0.240
G14     289.5          70.6                3.2 +/-    0.98       3.4 +/-    0.98  0.150 / 0.310
G18     306.1          40.0                5.0 +/-    1.71       7.3 +/-    1.71  0.150 / 0.320
G20     103.3          30.8                5.3 +/-    1.29       9.1 +/-    1.29  0.050 / 0.070
G27     227.0          11.0                3.3 +/-    3.79       9.0 +/-    3.79  0.050 / 0.060
G31     176.5          38.9                6.4 +/-    1.19       9.5 +/-    1.19  0.080 / 0.100
G32     350.1          71.2                3.7 +/-    0.73       3.9 +/-    0.73  0.060 / 0.110