PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-00:12:50
G02     84.8962        14.5923          8.9872 +/-  1.8800   22.5758 +/-  1.8800  0.140 / 0.250
G05     44.9653        32.2824          8.5149 +/-  1.1762   14.2358 +/-  1.1762  0.140 / 0.260
G13     96.5284        34.9950          9.9176 +/-  1.0386   15.7405 +/-  1.0386  0.130 / 0.150
G15     145.3234       39.4576         12.5011 +/-  1.3280   18.3456 +/-  1.3280  0.120 / 0.140
G18     233.2100       28.5007         11.9406 +/-  1.9024   21.5845 +/-  1.9024  0.150 / 0.180
G20     11.5954        79.6891          9.0974 +/-  0.4247    9.2312 +/-  0.4247  0.260 / 0.160
G21     299.0732       37.5303          9.5389 +/-  2.0156   14.4646 +/-  2.0156  0.020 / 0.020
G25     203.3807       20.4737         14.4313 +/-  2.1026   31.3893 +/-  2.1026  0.020 / 0.020
G26     303.6274       18.6857          8.6069 +/-  0.7513   19.5576 +/-  0.7513  0.060 / 0.090
G29     106.2918       86.3577          9.2554 +/-  0.5026    9.2723 +/-  0.5026  0.060 / 0.080