PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-07:42:50
G01     266.9858       40.4593          5.4893 +/-  0.9177    7.9247 +/-  0.9177  0.080 / 0.140
G03     315.8608       29.4350          3.5249 +/-  1.7366    6.2464 +/-  1.7366  0.090 / 0.120
G10     131.0925       16.0622          3.3936 +/-  1.0996    8.2253 +/-  1.0996  0.050 / 0.050
G11     245.2144       19.9656          4.0746 +/-  1.6516    8.9730 +/-  1.6516  0.080 / 0.060
G14     47.9577        47.1768          3.7889 +/-  0.7886    4.9545 +/-  0.7886  0.060 / 0.150
G22     313.7092       55.4661          3.4331 +/-  1.2456    4.0708 +/-  1.2456  0.060 / 0.130
G25     46.6933        13.6796          0.9246 +/-  0.8387    2.3740 +/-  0.8387  0.080 / 0.100
G26     147.1594       26.4911          4.8148 +/-  2.0257    9.0955 +/-  2.0257  0.080 / 0.100
G31     50.1467        71.4751          4.5549 +/-  0.5494    4.7767 +/-  0.5494  0.060 / 0.100
G32     65.9576        31.3977          2.6709 +/-  0.9831    4.5451 +/-  0.9831  0.070 / 0.080