PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-22:12:30
G02     205.8          43.5               15.0 +/-    1.79      20.6 +/-    1.79  0.050 / 0.080
G06     150.1          75.5               13.7 +/-    0.99      14.1 +/-    0.99  0.050 / 0.080
G12     310.5          19.2               11.8 +/-    0.68      26.4 +/-    0.68  0.080 / 0.180
G17     43.3           43.0               10.5 +/-    0.36      14.6 +/-    0.36  0.070 / 0.190
G19     16.8           60.0               11.7 +/-    0.71      13.3 +/-    0.71  0.100 / 0.200
G24     287.1          41.6               11.2 +/-    1.35      15.9 +/-    1.35  0.090 / 0.240
G28     107.7          29.8               12.6 +/-    0.75      22.2 +/-    0.75  0.030 / 0.030