PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-16:43:00
G01     320.4          13.6                5.1 +/-    1.98      13.2 +/-    1.98  0.130 / 0.300
G08     263.5          15.5                6.8 +/-    2.40      16.8 +/-    2.40  0.140 / 0.290
G10     70.9           56.3                6.5 +/-    0.80       7.6 +/-    0.80  0.060 / 0.080
G11     308.8          19.1                6.7 +/-    1.97      15.0 +/-    1.97  0.060 / 0.080
G14     280.1          68.4                6.7 +/-    0.68       7.2 +/-    0.68  0.100 / 0.240
G18     98.4           30.4                7.8 +/-    0.62      13.5 +/-    0.62  0.110 / 0.240
G27     226.6          11.7                6.3 +/-    3.46      16.8 +/-    3.46  0.040 / 0.060
G31     177.4          36.4               10.7 +/-    1.36      16.6 +/-    1.36  0.030 / 0.060
G32     356.5          70.8                6.8 +/-    0.77       7.1 +/-    0.77  0.030 / 0.030