PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-14:42:30
G02     201.2          21.9               19.0 +/-    2.03      40.0 +/-    2.03  0.130 / 0.530
G06     170.4          56.6               18.5 +/-    0.60      21.7 +/-    0.60  0.140 / 0.420
G13     227.1          11.5               16.5 +/-    1.52      44.5 +/-    1.52  0.080 / 0.100
G17     28.4           55.5               15.0 +/-    0.92      17.8 +/-    0.92  0.090 / 0.130
G19     339.3          70.2               15.7 +/-    0.39      16.5 +/-    0.39  0.130 / 0.210
G24     309.4          30.2               12.0 +/-    1.34      20.9 +/-    1.34  0.130 / 0.210
G28     91.7           37.7               16.4 +/-    1.30      24.8 +/-    1.30  0.040 / 0.030
G30     157.8          13.4               18.7 +/-    1.31      48.3 +/-    1.31  0.040 / 0.030