PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-15:28:10
G02     218.9          62.3               13.5 +/-    1.35      15.0 +/-    1.35  0.050 / 0.080
G06     51.7           72.5               11.3 +/-    0.62      11.8 +/-    0.62  0.070 / 0.080
G12     319.7          39.0                9.4 +/-    0.84      13.8 +/-    0.84  0.040 / 0.050
G17     62.1           27.9               10.2 +/-    1.43      18.7 +/-    1.43  0.060 / 0.070
G19     45.7           45.3                9.5 +/-    1.15      12.8 +/-    1.15  0.050 / 0.150
G24     263.1          40.6               11.6 +/-    1.73      16.7 +/-    1.73  0.060 / 0.120
G28     125.4          10.4               16.9 +/-    4.15      46.8 +/-    4.15  0.050 / 0.050