PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-04:58:00
G08     275.0817       21.5369          5.5846 +/-  1.0744   11.8385 +/-  1.0744  0.030 / 0.010
G10     39.8581        62.1141          1.1053 +/-  0.8821    1.2331 +/-  0.8821  0.030 / 0.020
G11     315.4421       13.0941          3.3773 +/-  3.0578    8.7921 +/-  3.0578  0.150 / 0.240
G14     250.1987       61.4131          5.2262 +/-  0.7497    5.8641 +/-  0.7497  0.190 / 0.280
G18     80.4540        44.0592          3.9391 +/-  1.4144    5.3806 +/-  1.4144  0.030 / 0.020
G21     152.1367       24.9184          5.0342 +/-  1.5349    9.8549 +/-  1.5349  0.030 / 0.020
G24     45.1188        18.0862          3.3538 +/-  2.6885    7.7341 +/-  2.6885  0.070 / 0.060
G27     237.8983       21.8585          5.6800 +/-  2.3640   11.9480 +/-  2.3640  0.070 / 0.060
G31     179.9825       20.9264          5.5048 +/-  1.8082   11.8425 +/-  1.8082  0.060 / 0.080
G32     296.2449       75.7471          0.4035 +/-  0.3621    0.4150 +/-  0.3621  0.150 / 0.080