PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-08:58:10
G01     319.7          16.1                3.0 +/-    3.41       7.4 +/-    3.41  0.090 / 0.290
G08     261.9          14.2                7.5 +/-    1.49      19.0 +/-    1.49  0.070 / 0.280
G10     76.3           54.5                6.0 +/-    0.40       7.2 +/-    0.40  0.240 / 0.280
G11     305.8          21.2                3.5 +/-    3.54       7.4 +/-    3.54  0.130 / 0.390
G18     307.0          38.0                3.1 +/-    1.39       4.7 +/-    1.39  0.170 / 0.370
G20     109.1          12.8                5.3 +/-    1.48      14.0 +/-    1.48  0.160 / 0.340
G22     300.6          12.6                3.9 +/-    6.81      10.3 +/-    6.81  0.120 / 0.280
G27     225.2          9.9                 7.5 +/-    3.37      20.9 +/-    3.37  0.110 / 0.290
G31     174.6          41.6                9.1 +/-    0.69      12.9 +/-    0.69  0.040 / 0.040
G32     7.5            67.9                5.5 +/-    0.75       5.9 +/-    0.75  0.050 / 0.040