PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-09:12:40
G08     314.5          15.2                1.9 +/-    1.74       4.8 +/-    1.74  0.160 / 0.210
G10     327.6          59.2                4.2 +/-    0.82       4.8 +/-    0.82  0.280 / 0.300
G14     217.5          25.5                6.3 +/-    2.38      12.2 +/-    2.38  0.050 / 0.040
G15     46.5           11.6                2.4 +/-    2.22       6.4 +/-    2.22  0.060 / 0.030
G20     73.4           30.9                4.2 +/-    0.62       7.1 +/-    0.62  0.060 / 0.120
G21     132.1          58.8                7.3 +/-    0.38       8.4 +/-    0.38  0.060 / 0.120
G24     76.5           30.2                6.6 +/-    1.07      11.6 +/-    1.07  0.040 / 0.040
G27     276.8          37.7                6.1 +/-    1.15       9.2 +/-    1.15  0.040 / 0.040
G32     221.6          51.9                7.0 +/-    1.73       8.6 +/-    1.73  0.090 / 0.030