PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-03:12:40
G01     319.2          17.0                4.3 +/-    1.50      10.2 +/-    1.50  0.120 / 0.250
G08     256.8          13.8                7.4 +/-    1.33      19.0 +/-    1.33  0.100 / 0.220
G10     76.6           54.8                4.3 +/-    0.48       5.2 +/-    0.48  0.030 / 0.040
G11     302.7          24.2                7.1 +/-    2.32      14.1 +/-    2.32  0.040 / 0.050
G14     297.8          71.2                5.4 +/-    0.83       5.6 +/-    0.83  0.050 / 0.050
G18     100.1          30.9                5.5 +/-    0.57       9.5 +/-    0.57  0.050 / 0.060
G31     177.3          39.7                7.5 +/-    0.90      11.0 +/-    0.90  0.050 / 0.030
G32     359.7          69.3                5.5 +/-    0.64       5.8 +/-    0.64  0.020 / 0.030