PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-08:42:50
G01     236.7234       26.5363          5.1110 +/-  1.5953    9.6453 +/-  1.5953  0.070 / 0.150
G03     309.9672       54.6313          4.0811 +/-  1.2826    4.8816 +/-  1.2826  0.070 / 0.130
G14     75.2631        30.8798          3.8139 +/-  1.5434    6.5589 +/-  1.5434  0.030 / 0.040
G16     156.7659       31.4120          5.2799 +/-  1.0611    8.9823 +/-  1.0611  0.030 / 0.040
G22     263.3689       76.4431          5.1695 +/-  0.5281    5.3020 +/-  0.5281  0.070 / 0.160
G23     296.4756       27.0227          1.4686 +/-  1.1121    2.7416 +/-  1.1121  0.060 / 0.140
G26     121.9012       48.2374          4.7162 +/-  1.5825    6.0816 +/-  1.5825  0.070 / 0.150
G31     40.9522        44.4444          1.1854 +/-  0.4483    1.6101 +/-  0.4483  0.060 / 0.150
G32     88.6306        14.8115          2.4063 +/-  1.0014    6.0128 +/-  1.0014  0.100 / 0.130