PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-17:12:30
G02     205.6          36.5               15.4 +/-    1.28      23.7 +/-    1.28  0.060 / 0.100
G06     149.3          74.1               14.2 +/-    0.98      14.7 +/-    0.98  0.060 / 0.090
G12     310.8          20.0               11.9 +/-    1.74      26.1 +/-    1.74  0.030 / 0.050
G17     43.0           43.3               10.8 +/-    0.66      14.9 +/-    0.66  0.040 / 0.070
G19     15.8           60.9               12.1 +/-    0.43      13.6 +/-    0.43  0.110 / 0.240
G24     294.3          39.2               10.9 +/-    1.70      16.0 +/-    1.70  0.200 / 0.240
G28     107.6          27.6               11.2 +/-    1.39      20.6 +/-    1.39  0.060 / 0.100