PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-07:42:50
G01     264.4924       39.9639          5.7263 +/-  0.9247    8.3336 +/-  0.9247  0.120 / 0.210
G03     316.0819       31.0865          4.7862 +/-  1.6784    8.1964 +/-  1.6784  0.120 / 0.230
G10     132.1164       14.5354          4.3431 +/-  1.9088   10.9248 +/-  1.9088  0.070 / 0.180
G11     243.6015       19.0056          5.2381 +/-  2.3547   11.8094 +/-  2.3547  0.080 / 0.170
G14     49.9964        46.0496          2.6703 +/-  0.7434    3.5457 +/-  0.7434  0.090 / 0.120
G22     313.1008       57.1752          3.0784 +/-  1.5495    3.5884 +/-  1.5495  0.090 / 0.110
G25     45.1189        12.9164          1.3284 +/-  0.8282    3.4727 +/-  0.8282  0.060 / 0.080
G26     145.9684       28.0485          5.4873 +/-  1.7234   10.0164 +/-  1.7234  0.060 / 0.110
G31     47.5668        69.6937          3.5953 +/-  0.3820    3.8072 +/-  0.3820  0.040 / 0.050
G32     67.5528        30.2639          3.1452 +/-  0.7039    5.4778 +/-  0.7039  0.050 / 0.060