PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-01:57:40
G10     311.0          56.2                7.2 +/-    1.77       8.4 +/-    1.77  0.080 / 0.070
G14     212.1          18.1                9.4 +/-    1.77      21.7 +/-    1.77  0.060 / 0.060
G15     45.5           20.8                6.5 +/-    2.03      14.1 +/-    2.03  0.080 / 0.070
G20     9.5            64.4                9.0 +/-    0.46       9.9 +/-    0.46  0.070 / 0.050
G21     115.1          69.3                9.2 +/-    0.81       9.8 +/-    0.81  0.030 / 0.050
G24     89.8           29.0                7.8 +/-    0.70      13.9 +/-    0.70  0.030 / 0.030
G27     292.7          36.6                9.9 +/-    1.95      15.2 +/-    1.95  0.150 / 0.340
G32     213.9          37.9                9.5 +/-    1.73      14.3 +/-    1.73  0.150 / 0.390