PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-19:13:00
G01     126.0          12.6               15.4 +/-    3.10      40.4 +/-    3.10  0.110 / 0.260
G07     55.7           69.6               12.1 +/-    0.35      12.8 +/-    0.35  0.110 / 0.210
G08     51.3           41.8                9.6 +/-    0.82      13.6 +/-    0.82  0.050 / 0.050
G09     178.5          35.1               12.9 +/-    1.08      20.5 +/-    1.08  0.050 / 0.060
G11     118.6          35.8               13.9 +/-    1.02      21.7 +/-    1.02  0.180 / 0.320
G13     320.9          12.5                8.9 +/-    4.09      23.5 +/-    4.09  0.170 / 0.360
G17     201.6          12.5               14.1 +/-    3.17      37.3 +/-    3.17  0.030 / 0.030
G18     103.0          17.3               12.7 +/-    3.00      30.0 +/-    3.00  0.030 / 0.040
G28     279.0          53.9               11.3 +/-    2.60      13.6 +/-    2.60  0.030 / 0.030
G30     337.2          63.0               10.9 +/-    0.51      12.1 +/-    0.51  0.030 / 0.030