PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-01:58:10
G08     288.3          23.5                9.3 +/-    1.06      18.8 +/-    1.06  0.040 / 0.030
G10     12.0           63.3                7.7 +/-    0.37       8.5 +/-    0.37  0.030 / 0.040
G14     233.5          51.0               11.6 +/-    1.42      14.4 +/-    1.42  0.050 / 0.110
G18     66.5           50.3               10.1 +/-    0.87      12.7 +/-    0.87  0.060 / 0.110
G21     147.4          36.6               11.0 +/-    0.94      16.9 +/-    0.94  0.050 / 0.090
G24     54.5           25.3                9.2 +/-    0.87      17.9 +/-    0.87  0.050 / 0.130
G27     249.4          29.7               11.3 +/-    1.39      19.9 +/-    1.39  0.040 / 0.090
G32     251.2          68.3                9.9 +/-    0.41      10.6 +/-    0.41  0.040 / 0.080