PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-23:12:40
G02     63.3552        31.3630         10.7942 +/-  0.9403   18.3816 +/-  0.9403  0.040 / 0.090
G05     51.9879        57.7679          9.1849 +/-  0.4943   10.6456 +/-  0.4943  0.050 / 0.090
G12     182.6854       23.7825         12.2638 +/-  2.0067   24.6478 +/-  2.0067  0.030 / 0.050
G13     123.9064       20.0181         13.8295 +/-  1.0642   30.4159 +/-  1.0642  0.030 / 0.050
G15     162.2230       16.1012         16.5420 +/-  1.9513   40.0554 +/-  1.9513  0.020 / 0.040
G20     211.1924       69.8025         11.8161 +/-  0.9602   12.5048 +/-  0.9602  0.030 / 0.040
G21     276.5218       21.4253         10.8647 +/-  1.8237   23.0934 +/-  1.8237  0.080 / 0.260
G25     221.3670       44.7373         12.7967 +/-  1.3755   17.3086 +/-  1.3755  0.090 / 0.190
G29     334.1926       63.0192         11.5558 +/-  0.5126   12.8000 +/-  0.5126  0.090 / 0.260