PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-15:43:10
G01     40.5           15.1                7.2 +/-    1.91      17.8 +/-    1.91  0.130 / 0.230
G06     174.6          40.7               12.4 +/-    1.10      17.9 +/-    1.10  0.160 / 0.240
G13     238.5          21.3               12.5 +/-    2.35      26.6 +/-    2.35  0.090 / 0.280
G15     272.4          11.9               10.5 +/-    1.37      28.1 +/-    1.37  0.100 / 0.280
G17     10.4           67.6               10.5 +/-    0.77      11.2 +/-    0.77  0.060 / 0.130
G19     287.2          71.2               10.7 +/-    0.62      11.2 +/-    0.62  0.060 / 0.120
G24     316.9          18.8                8.7 +/-    1.80      19.8 +/-    1.80  0.130 / 0.320
G28     73.8           46.0                9.1 +/-    0.96      12.1 +/-    0.96  0.120 / 0.300
G30     155.3          28.2               10.9 +/-    2.02      19.8 +/-    2.02  0.030 / 0.030