PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/20-00:12:40
G01     306.6          33.4                9.3 +/-    0.69      15.1 +/-    0.69  0.090 / 0.120
G10     106.2          40.6               11.1 +/-    0.36      16.0 +/-    0.36  0.060 / 0.130
G11     280.5          28.9                9.3 +/-    1.83      16.7 +/-    1.83  0.060 / 0.070
G14     0.7            66.2                9.0 +/-    0.74       9.7 +/-    0.74  0.060 / 0.070
G18     117.6          13.7               10.5 +/-    2.38      27.0 +/-    2.38  0.030 / 0.050
G22     309.5          25.2                7.2 +/-    2.10      13.9 +/-    2.10  0.030 / 0.030
G25     79.9           16.4                8.3 +/-    2.01      19.9 +/-    2.01  0.120 / 0.290
G31     173.8          62.2               11.5 +/-    1.36      12.8 +/-    1.36  0.120 / 0.300
G32     33.1           54.5                8.3 +/-    1.19      10.0 +/-    1.19  0.040 / 0.040