PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-07:42:50
G01     224.9          15.8               -4.1 +/-   24.10     -10.1 +/-   24.10  0.230 / 0.300
G03     287.2          66.4              -15.7 +/-   14.32     -17.0 +/-   14.32  0.280 / 0.290
G09     295.8          11.0               -9.8 +/-   25.62     -26.7 +/-   25.62  0.060 / 0.100
G14     89.0           21.6                2.3 +/-    1.78       4.9 +/-    1.78  0.060 / 0.080
G16     147.4          46.3               18.9 +/-   13.21      25.0 +/-   13.21  0.040 / 0.040
G22     210.9          69.5               42.6 +/-   27.96      45.1 +/-   27.96  0.040 / 0.030
G23     307.6          37.1                2.0 +/-    0.86       3.1 +/-    0.86  0.490 / 0.330
G26     97.6           55.0              -78.0 +/-   69.12     -92.9 +/-   69.12  0.430 / 0.270
G31     45.4           31.5               16.5 +/-   19.29      28.0 +/-   19.29  0.110 / 0.170