PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-15:42:50
G02     216.3          59.1               14.4 +/-    0.39      16.4 +/-    0.39  0.050 / 0.070
G06     58.0           74.9               14.6 +/-    0.81      15.1 +/-    0.81  0.040 / 0.080
G12     318.9          36.5               12.7 +/-    1.56      19.6 +/-    1.56  0.060 / 0.100
G17     59.7           29.7               12.8 +/-    0.58      22.5 +/-    0.58  0.050 / 0.080
G19     42.5           47.2               13.1 +/-    0.60      17.2 +/-    0.60  0.030 / 0.030
G24     267.1          41.3               13.5 +/-    2.25      19.2 +/-    2.25  0.030 / 0.030
G28     123.5          12.6               11.8 +/-    1.66      31.0 +/-    1.66  0.060 / 0.110