PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-14:28:10
G01     121.4609       15.8381         10.5242 +/-  2.1950   25.6483 +/-  2.1950  0.120 / 0.380
G08     45.9225        32.4340          9.1348 +/-  0.6754   15.2265 +/-  0.6754  0.130 / 0.490
G09     176.2573       28.1733         12.8039 +/-  3.6269   23.3091 +/-  3.6269  0.040 / 0.070
G11     107.2867       37.0477         11.8201 +/-  1.0550   18.0760 +/-  1.0550  0.040 / 0.040
G13     319.8891       15.1560          6.5302 +/-  2.2881   16.1816 +/-  2.2881  0.100 / 0.130
G17     200.2670       23.5956         10.1520 +/-  1.0485   20.4930 +/-  1.0485  0.080 / 0.170
G28     287.2054       55.8459          9.3576 +/-  0.9499   11.0528 +/-  0.9499  0.090 / 0.120
G30     337.7279       63.6743         10.3649 +/-  0.7674   11.4233 +/-  0.7674  0.110 / 0.110