PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-17:58:10
G02     202.3          27.6               14.6 +/-    1.60      27.0 +/-    1.60  0.080 / 0.220
G06     162.7          64.3               14.9 +/-    1.43      16.3 +/-    1.43  0.090 / 0.210
G12     305.2          13.6               11.6 +/-    1.81      29.9 +/-    1.81  0.060 / 0.120
G17     30.0           53.9               11.0 +/-    0.73      13.3 +/-    0.73  0.070 / 0.130
G19     339.4          68.8               12.6 +/-    0.74      13.4 +/-    0.74  0.060 / 0.100
G24     302.8          35.9               13.6 +/-    1.54      21.2 +/-    1.54  0.060 / 0.100
G28     96.8           34.9               12.8 +/-    0.61      20.4 +/-    0.61  0.090 / 0.120