PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-22:12:30
G02     203.6          37.3               14.4 +/-    1.25      21.9 +/-    1.25  0.150 / 0.200
G06     154.4          71.5               13.1 +/-    0.45      13.7 +/-    0.45  0.130 / 0.250
G12     308.8          17.2               10.8 +/-    1.81      25.4 +/-    1.81  0.090 / 0.090
G17     34.5           50.6               12.0 +/-    0.84      15.0 +/-    0.84  0.110 / 0.120
G19     2.0            64.8               11.5 +/-    0.35      12.6 +/-    0.35  0.080 / 0.120
G24     295.7          39.1               12.3 +/-    3.06      18.2 +/-    3.06  0.070 / 0.110
G28     104.5          29.7               13.1 +/-    1.69      23.1 +/-    1.69  0.040 / 0.020