PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-11:28:00
G03     193.0          22.8               -4.7 +/-   16.73      -9.8 +/-   16.73  0.030 / 0.050
G07     292.8          40.3                1.4 +/-    1.78       2.0 +/-    1.78  0.030 / 0.050
G08     139.2          28.9                5.1 +/-    1.71       9.2 +/-    1.71  0.090 / 0.450
G09     321.4          64.9                4.9 +/-    3.94       5.3 +/-    3.94  0.090 / 0.430
G16     42.7           39.8               10.7 +/-   12.76      15.6 +/-   12.76  0.090 / 0.190
G23     109.7          80.8                3.4 +/-    0.65       3.4 +/-    0.65  0.080 / 0.170
G26     43.4           12.7              -28.1 +/-   80.89     -73.8 +/-   80.89  0.040 / 0.070
G27     97.9           33.6                6.9 +/-    4.96      11.2 +/-    4.96  0.030 / 0.100
G30     272.6          10.7               -9.1 +/-   25.20     -25.0 +/-   25.20  0.040 / 0.070