PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-03:12:50
G08     267.0          18.8               10.1 +/-    1.32      22.9 +/-    1.32  0.030 / 0.030
G10     56.6           59.8                8.9 +/-    0.68      10.1 +/-    0.68  0.030 / 0.030
G11     311.2          18.1                8.5 +/-    1.54      19.7 +/-    1.54  0.080 / 0.240
G14     266.2          66.8               10.0 +/-    0.64      10.7 +/-    0.64  0.090 / 0.280
G18     89.6           38.3                9.3 +/-    0.71      13.9 +/-    0.71  0.090 / 0.150
G21     153.9          16.5                7.4 +/-    1.98      17.7 +/-    1.98  0.110 / 0.170
G24     41.0           12.6                7.5 +/-    2.55      19.9 +/-    2.55  0.100 / 0.210
G27     231.6          16.5               11.7 +/-    1.31      28.0 +/-    1.31  0.080 / 0.180
G31     179.2          28.1               10.9 +/-    1.23      19.9 +/-    1.23  0.040 / 0.060
G32     326.2          74.8               11.0 +/-    1.04      11.3 +/-    1.04  0.040 / 0.070