PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-15:27:50
G02     201.4          21.4               12.4 +/-    1.24      26.5 +/-    1.24  0.100 / 0.540
G06     170.0          56.9               13.5 +/-    1.18      15.8 +/-    1.18  0.110 / 0.480
G13     227.0          11.5               11.1 +/-    2.26      29.9 +/-    2.26  0.120 / 0.300
G17     28.5           55.5                9.8 +/-    0.96      11.6 +/-    0.96  0.090 / 0.360
G19     339.5          70.2               12.1 +/-    0.65      12.8 +/-    0.65  0.080 / 0.130
G24     309.4          30.2                9.6 +/-    1.10      16.8 +/-    1.10  0.070 / 0.150
G28     91.6           37.7                9.9 +/-    1.24      15.0 +/-    1.24  0.040 / 0.050
G30     157.9          13.6               10.5 +/-    1.49      27.1 +/-    1.49  0.020 / 0.050