PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-23:12:40
G08     303.0          21.8                8.0 +/-    1.57      16.7 +/-    1.57  0.090 / 0.060
G10     344.9          61.6                7.5 +/-    0.75       8.5 +/-    0.75  0.070 / 0.090
G14     221.7          35.8               11.4 +/-    1.76      17.9 +/-    1.76  0.060 / 0.110
G15     48.1           10.4                7.7 +/-    2.20      21.3 +/-    2.20  0.120 / 0.130
G20     48.6           57.8                9.9 +/-    1.19      11.5 +/-    1.19  0.050 / 0.070
G21     139.8          51.1               11.0 +/-    0.89      13.6 +/-    0.89  0.060 / 0.080
G24     64.6           27.8                7.7 +/-    0.98      14.2 +/-    0.98  0.040 / 0.050
G27     268.1          35.9               10.1 +/-    1.57      15.8 +/-    1.57  0.040 / 0.060
G32     229.6          59.5               10.4 +/-    1.82      11.8 +/-    1.82  0.110 / 0.200