PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-23:12:50
G08     270.4          18.3                9.4 +/-    1.72      21.7 +/-    1.72  0.140 / 0.220
G10     62.8           56.9                8.8 +/-    0.85      10.3 +/-    0.85  0.170 / 0.380
G14     262.0          64.0                8.5 +/-    0.79       9.4 +/-    0.79  0.050 / 0.050
G18     312.7          32.2                6.8 +/-    1.19      11.5 +/-    1.19  0.060 / 0.050
G20     95.9           35.7                9.3 +/-    0.64      14.6 +/-    0.64  0.090 / 0.110
G21     155.3          16.5                9.4 +/-    2.83      22.4 +/-    2.83  0.090 / 0.150
G24     40.5           11.0                6.3 +/-    2.83      17.1 +/-    2.83  0.090 / 0.170
G27     232.1          16.5               11.1 +/-    2.19      26.5 +/-    2.19  0.090 / 0.180
G31     177.2          31.1               11.2 +/-    1.85      19.1 +/-    1.85  0.240 / 0.210
G32     339.7          74.4                7.4 +/-    0.40       7.6 +/-    0.40  0.220 / 0.240