PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-09:27:50
G08     265.6          15.7                7.3 +/-    2.74      17.9 +/-    2.74  0.040 / 0.060
G10     70.3           56.3                3.1 +/-    1.00       3.7 +/-    1.00  0.050 / 0.070
G11     308.8          19.2                5.2 +/-    1.91      11.6 +/-    1.91  0.110 / 0.410
G14     272.1          65.2                2.7 +/-    0.56       2.9 +/-    0.56  0.100 / 0.320
G18     309.7          35.2                4.0 +/-    1.45       6.3 +/-    1.45  0.120 / 0.250
G20     107.9          10.8                2.8 +/-    2.19       7.6 +/-    2.19  0.120 / 0.340
G21     155.4          10.6                3.6 +/-    2.74      10.0 +/-    2.74  0.030 / 0.030
G27     227.6          12.2                4.7 +/-    4.49      12.6 +/-    4.49  0.030 / 0.040
G31     175.5          37.7                6.0 +/-    1.47       9.1 +/-    1.47  0.160 / 0.290
G32     359.8          70.4                3.9 +/-    0.95       4.1 +/-    0.95  0.110 / 0.250