PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-00:57:50
G08     278.5          22.3                9.6 +/-    1.45      20.0 +/-    1.45  0.070 / 0.150
G10     33.3           62.6                9.4 +/-    0.93      10.5 +/-    0.93  0.070 / 0.140
G14     245.1          58.8               12.6 +/-    0.82      14.4 +/-    0.82  0.030 / 0.030
G18     78.3           44.5               10.0 +/-    0.47      13.6 +/-    0.47  0.030 / 0.030
G21     150.9          26.6               12.6 +/-    1.06      23.7 +/-    1.06  0.060 / 0.190
G24     47.2           20.1                8.9 +/-    0.95      19.5 +/-    0.95  0.100 / 0.180
G27     240.5          23.9               11.7 +/-    1.68      23.5 +/-    1.68  0.030 / 0.030
G31     182.2          16.1               15.5 +/-    2.95      37.4 +/-    2.95  0.030 / 0.030
G32     276.7          73.4               10.6 +/-    0.77      11.0 +/-    0.77  0.080 / 0.190