PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-21:42:50
G02     212.2          55.3               13.9 +/-    0.56      16.5 +/-    0.56  0.080 / 0.130
G06     72.4           77.2               11.5 +/-    0.14      11.7 +/-    0.14  0.070 / 0.100
G12     317.2          32.6               10.2 +/-    1.41      16.9 +/-    1.41  0.050 / 0.070
G17     51.7           37.6               10.0 +/-    1.58      15.2 +/-    1.58  0.070 / 0.070
G19     31.0           53.8               11.2 +/-    0.89      13.5 +/-    0.89  0.030 / 0.020
G24     271.7          42.5               12.0 +/-    2.35      16.8 +/-    2.35  0.030 / 0.020
G28     119.3          17.2               11.5 +/-    1.54      27.2 +/-    1.54  0.040 / 0.040