PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-00:57:40
G08     299.7          22.6                8.4 +/-    0.94      17.4 +/-    0.94  0.030 / 0.030
G10     348.0          62.0                9.0 +/-    0.35      10.1 +/-    0.35  0.040 / 0.030
G14     223.9          40.9               10.3 +/-    2.86      14.7 +/-    2.86  0.060 / 0.060
G18     51.8           55.7                9.4 +/-    0.50      11.2 +/-    0.50  0.060 / 0.100
G21     141.2          47.3               10.1 +/-    0.46      13.2 +/-    0.46  0.040 / 0.060
G24     65.4           29.3               10.4 +/-    0.95      18.5 +/-    0.95  0.040 / 0.050
G27     261.5          35.0               11.5 +/-    2.24      18.3 +/-    2.24  0.090 / 0.110
G32     232.8          58.5                8.9 +/-    1.56      10.2 +/-    1.56  0.090 / 0.080