PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-23:58:00
G01     306.1          33.8                9.7 +/-    1.18      15.7 +/-    1.18  0.050 / 0.060
G10     106.8          40.1               10.1 +/-    0.66      14.7 +/-    0.66  0.040 / 0.040
G11     279.9          28.9                9.7 +/-    0.86      17.4 +/-    0.86  0.070 / 0.100
G14     1.9            65.9                8.3 +/-    0.86       9.0 +/-    0.86  0.070 / 0.090
G18     118.0          13.1               10.5 +/-    1.74      27.3 +/-    1.74  0.060 / 0.160
G22     309.7          25.7                7.3 +/-    0.95      14.0 +/-    0.95  0.060 / 0.130
G25     79.4           16.6                7.5 +/-    1.47      18.0 +/-    1.47  0.100 / 0.260
G31     173.8          62.7               11.0 +/-    0.83      12.2 +/-    0.83  0.130 / 0.290
G32     34.1           53.9                7.8 +/-    0.33       9.4 +/-    0.33  0.050 / 0.040