PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-22:28:10
G10     262.1          34.3                8.7 +/-    1.22      13.9 +/-    1.22  0.040 / 0.050
G13     45.2           23.4                7.4 +/-    0.72      15.1 +/-    0.72  0.040 / 0.040
G15     65.5           52.5                9.8 +/-    0.40      12.0 +/-    0.40  0.110 / 0.370
G16     286.5          12.5                8.8 +/-    2.36      23.3 +/-    2.36  0.110 / 0.410
G18     290.8          62.5                7.4 +/-    0.87       8.2 +/-    0.87  0.160 / 0.420
G20     51.7           37.7                8.6 +/-    0.35      13.0 +/-    0.35  0.130 / 0.480
G21     355.1          69.6               10.2 +/-    0.72      10.9 +/-    0.72  0.060 / 0.190
G26     259.6          10.0                7.7 +/-    2.81      21.5 +/-    2.81  0.070 / 0.230
G27     319.7          16.7                7.5 +/-    0.97      17.9 +/-    0.97  0.120 / 0.220
G29     165.9          32.5               11.7 +/-    1.73      19.5 +/-    1.73  0.130 / 0.210