PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-23:28:00
G08     312.5          16.7                7.5 +/-    1.69      17.9 +/-    1.69  0.030 / 0.050
G10     336.4          60.7                7.1 +/-    0.53       8.1 +/-    0.53  0.030 / 0.040
G14     218.0          29.6               12.0 +/-    2.19      21.2 +/-    2.19  0.200 / 0.300
G15     47.1           10.3                7.1 +/-    4.88      19.6 +/-    4.88  0.100 / 0.150
G20     39.4           59.8                7.6 +/-    0.36       8.7 +/-    0.36  0.160 / 0.350
G21     134.9          57.5               10.7 +/-    0.36      12.5 +/-    0.36  0.150 / 0.530
G24     74.5           30.4                7.1 +/-    1.44      12.3 +/-    1.44  0.080 / 0.090
G27     274.7          37.6                9.5 +/-    2.32      14.4 +/-    2.32  0.080 / 0.070
G32     223.0          52.7               10.6 +/-    1.68      13.0 +/-    1.68  0.180 / 0.330