PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-04:27:50
G10     280.7          45.2                6.7 +/-    1.17       9.0 +/-    1.17  0.040 / 0.030
G15     50.3           39.7                5.6 +/-    1.15       8.2 +/-    1.15  0.030 / 0.030
G20     342.8          66.5                6.2 +/-    0.43       6.7 +/-    0.43  0.060 / 0.100
G21     41.0           77.2                7.3 +/-    0.33       7.5 +/-    0.33  0.070 / 0.090
G24     109.3          20.9                6.5 +/-    1.35      14.0 +/-    1.35  0.140 / 0.200
G27     311.5          27.6                7.0 +/-    1.70      12.8 +/-    1.70  0.120 / 0.190
G29     169.0          19.8                8.6 +/-    2.62      19.0 +/-    2.62  0.040 / 0.060
G32     206.1          21.8                7.6 +/-    1.71      16.1 +/-    1.71  0.040 / 0.070