PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-02:12:50
G10     269.2160       38.6783          9.1633 +/-  1.1855   13.6238 +/-  1.1855  0.150 / 0.220
G13     41.3940        17.8100          6.7549 +/-  1.5364   15.6837 +/-  1.5364  0.100 / 0.270
G15     59.0454        49.7567          7.3173 +/-  0.7568    9.2559 +/-  0.7568  0.160 / 0.270
G16     278.1534       10.7325          9.5199 +/-  1.3180   26.1433 +/-  1.3180  0.170 / 0.270
G18     302.3200       64.0920          8.9597 +/-  0.8226    9.8437 +/-  0.8226  0.070 / 0.060
G20     56.8880        31.5283          5.7979 +/-  1.1360    9.8405 +/-  1.1360  0.060 / 0.080
G21     7.6626         73.2291          8.4780 +/-  0.7834    8.8141 +/-  0.7834  0.100 / 0.110
G24     119.5218       15.1934          9.7045 +/-  2.2382   24.0253 +/-  2.2382  0.090 / 0.130
G27     316.5575       22.0522          9.3015 +/-  1.3746   19.4755 +/-  1.3746  0.130 / 0.160
G29     167.7084       27.1136         11.6305 +/-  1.6447   21.6690 +/-  1.6447  0.170 / 0.130