PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-15:12:30
G02     254.8          76.1                8.4 +/-    0.42       8.6 +/-    0.42  0.080 / 0.110
G05     171.6          19.7                8.5 +/-    2.22      19.0 +/-    2.22  0.100 / 0.100
G06     40.0           51.3                8.4 +/-    0.68      10.5 +/-    0.68  0.020 / 0.040
G12     321.6          61.6                7.6 +/-    0.72       8.5 +/-    0.72  0.020 / 0.030
G17     76.5           17.5                7.8 +/-    1.35      18.2 +/-    1.35  0.090 / 0.130
G19     59.6           38.8                7.9 +/-    1.24      11.8 +/-    1.24  0.140 / 0.170
G24     236.3          30.7                9.1 +/-    1.90      15.8 +/-    1.90  0.170 / 0.290
G25     317.4          19.5                5.3 +/-    1.89      11.8 +/-    1.89  0.300 / 0.250