PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-03:42:50
G08     269.6          19.3                7.4 +/-    0.76      16.6 +/-    0.76  0.130 / 0.360
G10     56.0           59.4                6.6 +/-    1.20       7.5 +/-    1.20  0.120 / 0.270
G14     258.6          62.7                6.4 +/-    0.77       7.2 +/-    0.77  0.050 / 0.050
G18     313.8          29.3                9.5 +/-    2.91      16.9 +/-    2.91  0.040 / 0.060
G20     75.2           57.6               11.2 +/-    1.11      13.0 +/-    1.11  0.040 / 0.040
G21     154.5          19.0                8.8 +/-    3.50      19.9 +/-    3.50  0.030 / 0.040
G24     40.3           10.9                6.2 +/-    2.28      17.0 +/-    2.28  0.190 / 0.440
G27     234.0          17.8                8.6 +/-    2.80      19.9 +/-    2.80  0.220 / 0.420
G31     177.2          29.3                9.5 +/-    1.91      16.9 +/-    1.91  0.120 / 0.440
G32     336.4          75.1                6.4 +/-    0.46       6.6 +/-    0.46  0.110 / 0.430