PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-03:43:10
G08     309.0299       19.5181          7.6246 +/-  1.0670   16.9753 +/-  1.0670  0.090 / 0.050
G10     327.9778       59.1968          5.6120 +/-  0.5736    6.4190 +/-  0.5736  0.100 / 0.080
G14     217.5964       31.6328          9.5488 +/-  1.5354   16.1726 +/-  1.5354  0.070 / 0.100
G15     46.4868        14.4636          2.6823 +/-  2.7701    6.7589 +/-  2.7701  0.060 / 0.100
G18     33.3671        60.9544          6.8577 +/-  1.3558    7.7243 +/-  1.3558  0.030 / 0.030
G21     132.6467       58.3541          7.3516 +/-  0.2886    8.4739 +/-  0.2886  0.030 / 0.030
G24     76.7636        30.5860          4.6053 +/-  0.8996    7.9676 +/-  0.8996  0.130 / 0.200
G27     274.2320       37.7386          6.8823 +/-  1.6999   10.3985 +/-  1.6999  0.100 / 0.180
G32     222.6386       50.7151          8.1855 +/-  1.9543   10.2338 +/-  1.9543  0.060 / 0.070