PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/20-01:28:10
G08     312.1          17.9                9.1 +/-    1.12      21.0 +/-    1.12  0.070 / 0.120
G10     321.4          57.9                9.3 +/-    0.76      10.8 +/-    0.76  0.060 / 0.110
G14     215.7          28.1               13.9 +/-    3.07      25.4 +/-    3.07  0.030 / 0.040
G15     46.0           16.2                8.6 +/-    0.91      20.7 +/-    0.91  0.030 / 0.040
G18     28.5           61.9                9.4 +/-    0.60      10.5 +/-    0.60  0.040 / 0.040
G21     128.5          61.1               12.3 +/-    0.85      13.8 +/-    0.85  0.040 / 0.050
G24     81.2           30.5               10.8 +/-    0.85      18.7 +/-    0.85  0.080 / 0.220
G27     279.1          38.1               10.8 +/-    1.64      16.2 +/-    1.64  0.080 / 0.210
G32     219.8          45.9               14.3 +/-    1.27      19.0 +/-    1.27  0.060 / 0.110