PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-01:12:30
G08     292.8          23.5                8.5 +/-    1.35      17.2 +/-    1.35  0.050 / 0.100
G10     2.7            63.0                8.1 +/-    0.77       9.0 +/-    0.77  0.060 / 0.100
G14     229.4          47.2               10.5 +/-    1.46      13.8 +/-    1.46  0.040 / 0.090
G18     61.3           52.3                9.0 +/-    0.69      11.0 +/-    0.69  0.050 / 0.080
G21     145.3          40.5               11.1 +/-    1.40      16.0 +/-    1.40  0.030 / 0.040
G24     58.4           27.1               10.0 +/-    0.72      18.7 +/-    0.72  0.040 / 0.030
G27     253.7          31.9                9.9 +/-    2.34      16.7 +/-    2.34  0.080 / 0.120
G32     242.7          64.5                9.6 +/-    0.59      10.5 +/-    0.59  0.080 / 0.100