PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-07:43:10
G01     222.0          13.0                6.0 +/-   15.20      15.6 +/-   15.20  0.140 / 0.290
G03     276.3          68.2               12.0 +/-   20.27      12.9 +/-   20.27  0.110 / 0.370
G09     298.5          13.8                2.8 +/-   13.62       7.1 +/-   13.62  0.030 / 0.040
G14     92.5           19.1                9.0 +/-   25.89      20.2 +/-   25.89  0.030 / 0.220
G16     143.6          50.3               16.8 +/-   33.14      21.1 +/-   33.14  0.130 / 0.650
G22     204.0          65.7               19.0 +/-   39.34      20.6 +/-   39.34  0.160 / 0.590
G23     310.7          40.1               12.9 +/-   31.24      18.7 +/-   31.24  0.070 / 0.080
G26     89.7           55.4                0.8 +/-   40.34       0.9 +/-   40.34  0.050 / 0.270
G31     47.1           28.1                9.8 +/-   35.26      17.8 +/-   35.26  0.110 / 0.200