PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-16:13:00
G01     320.8          11.5               -1.7 +/-   30.89      -4.5 +/-   30.89  0.040 / 0.060
G08     266.0          16.6                5.7 +/-   14.49      13.6 +/-   14.49  0.040 / 0.040
G10     66.6           57.4                6.1 +/-    0.50       7.1 +/-    0.50  0.230 / 0.350
G11     310.7          17.5                5.1 +/-    1.61      12.0 +/-    1.61  0.160 / 0.420
G14     273.4          67.1                6.6 +/-    0.69       7.1 +/-    0.69  0.030 / 0.030
G27     228.4          13.3                8.9 +/-    4.23      23.1 +/-    4.23  0.030 / 0.040
G31     177.7          33.9                9.5 +/-    2.35      15.5 +/-    2.35  0.180 / 0.390
G32     350.3          72.2                7.1 +/-    0.45       7.5 +/-    0.45  0.150 / 0.380