PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-23:58:10
G08     320.0          11.9               -3.4 +/-   32.84      -9.2 +/-   32.84  0.070 / 0.080
G10     304.8          54.2                8.1 +/-    0.99       9.8 +/-    0.99  0.090 / 0.090
G14     211.7          15.2               10.9 +/-    2.28      27.0 +/-    2.28  0.030 / 0.040
G15     46.0           27.3                5.3 +/-    1.48       9.8 +/-    1.48  0.030 / 0.040
G20     297.8          47.5                6.2 +/-    0.91       8.1 +/-    0.91  0.080 / 0.140
G21     108.4          72.0                8.5 +/-    1.04       8.9 +/-    1.04  0.090 / 0.120
G24     90.3           27.8                6.2 +/-    1.58      11.5 +/-    1.58  0.190 / 0.560
G27     295.3          35.9                8.5 +/-    2.81      13.3 +/-    2.81  0.140 / 0.440
G32     212.4          38.6                9.8 +/-    1.74      14.6 +/-    1.74  0.190 / 0.370