PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-17:27:40
G01     119.5          17.7               14.1 +/-    1.96      32.9 +/-    1.96  0.040 / 0.080
G07     78.8           67.1               13.3 +/-    0.78      14.3 +/-    0.78  0.060 / 0.070
G08     45.7           33.7               11.2 +/-    0.92      18.3 +/-    0.92  0.030 / 0.030
G09     177.0          26.3               12.3 +/-    1.28      23.3 +/-    1.28  0.020 / 0.030
G11     108.3          39.8               14.3 +/-    0.45      20.8 +/-    0.45  0.030 / 0.020
G13     317.9          19.0               11.8 +/-    1.64      26.6 +/-    1.64  0.030 / 0.030
G17     202.5          21.7               13.5 +/-    2.45      28.6 +/-    2.45  0.110 / 0.200
G18     95.0           20.7               12.3 +/-    1.89      26.7 +/-    1.89  0.130 / 0.190
G28     292.3          57.3               12.3 +/-    1.68      14.4 +/-    1.68  0.130 / 0.200
G30     347.4          68.8               12.3 +/-    0.35      13.1 +/-    0.35  0.110 / 0.170