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               11.4 +/-    1.99      25.9 +/-    1.99  0.030 / 0.020
G10     56.6           59.8                9.4 +/-    1.19      10.7 +/-    1.19  0.030 / 0.020
G11     311.2          18.1                9.2 +/-    2.33      21.3 +/-    2.33  0.160 / 0.250
G14     266.2          66.8                8.9 +/-    0.87       9.6 +/-    0.87  0.120 / 0.270
G18     89.6           38.3                9.4 +/-    0.97      14.0 +/-    0.97  0.210 / 0.150
G21     153.9          16.5                6.8 +/-    3.54      16.3 +/-    3.54  0.090 / 0.160
G24     41.0           12.6                7.4 +/-    1.82      19.4 +/-    1.82  0.030 / 0.020
G27     231.6          16.5               11.1 +/-    2.54      26.6 +/-    2.54  0.030 / 0.030
G31     179.2          28.1               10.4 +/-    1.77      18.9 +/-    1.77  0.040 / 0.040
G32     326.2          74.8               10.0 +/-    0.57      10.3 +/-    0.57  0.040 / 0.050