PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-00:12:30
G08     299.8          22.5                8.5 +/-    1.17      17.6 +/-    1.17  0.050 / 0.090
G10     348.1          62.0                7.0 +/-    0.42       7.9 +/-    0.42  0.050 / 0.090
G14     223.9          40.9               12.3 +/-    1.35      17.7 +/-    1.35  0.030 / 0.040
G18     52.2           55.5                9.3 +/-    0.60      11.1 +/-    0.60  0.030 / 0.040
G21     141.2          46.9               11.4 +/-    0.91      15.0 +/-    0.91  0.080 / 0.090
G24     65.4           29.3                9.1 +/-    0.68      16.2 +/-    0.68  0.060 / 0.090
G27     261.5          35.0               10.3 +/-    1.90      16.3 +/-    1.90  0.040 / 0.040
G32     232.7          58.0               10.7 +/-    0.76      12.4 +/-    0.76  0.030 / 0.030