PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-23:27:40
G02     68.8260        27.0774        -30.8032 +/- 56.8235  -57.4360 +/- 56.8235  0.060 / 0.100
G05     47.4221        51.4045          8.8866 +/-  0.3939   11.0198 +/-  0.3939  0.060 / 0.110
G12     181.3210       17.2867         12.4216 +/-  2.4927   29.2147 +/-  2.4927  0.030 / 0.040
G13     118.1099       24.4305         12.5080 +/-  0.9188   24.7625 +/-  0.9188  0.030 / 0.050
G15     158.6178       21.6750         14.6022 +/-  0.8289   30.8519 +/-  0.8289  0.030 / 0.040
G18     222.4948       11.2789         -0.7292 +/- 28.1307   -1.9786 +/- 28.1307  0.030 / 0.040
G20     218.9917       77.1662         12.1562 +/-  0.8903   12.4350 +/-  0.8903  0.080 / 0.190
G21     281.9983       25.4232         12.5064 +/-  1.1110   24.2015 +/-  1.1110  0.060 / 0.120
G25     215.5934       38.6868         13.3565 +/-  0.3826   19.8554 +/-  0.3826  0.080 / 0.190
G29     339.4943       69.8439         11.7755 +/-  0.7613   12.4589 +/-  0.7613  0.090 / 0.180