PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-21:13:00
G02     8.3756         70.5988         11.4247 +/-  0.5232   12.0371 +/-  0.5232  0.050 / 0.070
G05     159.6756       46.4534         12.7609 +/-  0.9191   16.8505 +/-  0.9191  0.050 / 0.080
G06     47.1729        26.7454         10.5561 +/-  1.5305   19.8284 +/-  1.5305  0.040 / 0.060
G12     237.4696       79.6989         10.1271 +/-  0.4171   10.2758 +/-  0.4171  0.050 / 0.060
G19     89.3606        16.6952         11.5687 +/-  1.1621   27.6073 +/-  1.1621  0.060 / 0.160
G20     196.9130       13.7928         14.2464 +/-  5.4422   36.4796 +/-  5.4422  0.080 / 0.160
G24     219.1610       13.1250         14.0677 +/-  2.7399   36.5954 +/-  2.7399  0.030 / 0.030
G25     309.9067       46.5930         10.8280 +/-  2.2021   14.2709 +/-  2.2021  0.030 / 0.030
G29     297.6118       18.9632         10.5318 +/-  0.9803   23.7691 +/-  0.9803  0.120 / 0.470