PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-04:27:50
G01     252.4          36.0                8.5 +/-    1.94      13.3 +/-    1.94  0.100 / 0.240
G03     316.1          40.1                7.4 +/-    0.86      10.7 +/-    0.86  0.100 / 0.280
G11     236.4          13.6                7.5 +/-    1.61      19.3 +/-    1.61  0.070 / 0.080
G14     60.2           40.2                5.9 +/-    1.49       8.6 +/-    1.49  0.090 / 0.080
G16     165.7          15.7                2.3 +/-   20.26       5.5 +/-   20.26  0.040 / 0.040
G22     306.8          64.5                7.9 +/-    0.74       8.7 +/-    0.74  0.040 / 0.040
G23     284.9          17.1                9.4 +/-    1.22      22.2 +/-    1.22  0.240 / 0.350
G26     140.9          35.7                9.9 +/-    0.83      15.5 +/-    0.83  0.180 / 0.400
G31     40.6           62.1                7.3 +/-    0.43       8.2 +/-    0.43  0.030 / 0.030
G32     75.0           25.9                7.3 +/-    2.21      14.0 +/-    2.21  0.030 / 0.030