PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-00:57:40
G05     50.4011        15.0765          8.1750 +/-  2.3245   20.2963 +/-  2.3245  0.110 / 0.300
G10     239.7802       15.4122         13.6603 +/-  1.3916   33.6391 +/-  1.3916  0.090 / 0.280
G13     70.2507        36.6911         10.0500 +/-  0.6500   15.4664 +/-  0.6500  0.100 / 0.180
G15     120.5774       54.9975         10.7116 +/-  0.4201   12.7633 +/-  0.4201  0.100 / 0.120
G16     310.4673       13.2517          7.2305 +/-  2.3336   18.7532 +/-  2.3336  0.140 / 0.200
G18     250.1849       44.6673         11.8370 +/-  2.3058   16.0267 +/-  2.3058  0.270 / 0.300
G20     34.0677        59.7768          9.2807 +/-  0.8356   10.5605 +/-  0.8356  0.030 / 0.030
G21     317.5163       50.3780          9.2589 +/-  1.0099   11.6230 +/-  1.0099  0.030 / 0.030
G26     283.2567       19.4926         10.7356 +/-  1.5306   23.9166 +/-  1.5306  0.120 / 0.180
G29     158.9503       64.3168         10.1464 +/-  0.2841   11.1289 +/-  0.2841  0.110 / 0.200