PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-05:12:50
G01     318.0          20.3                7.2 +/-    5.29      15.7 +/-    5.29  0.130 / 0.240
G08     254.9          11.7                9.8 +/-    5.56      26.2 +/-    5.56  0.110 / 0.240
G10     84.3           51.4                6.9 +/-    0.63       8.6 +/-    0.63  0.040 / 0.060
G11     300.2          24.4                7.5 +/-    1.36      14.8 +/-    1.36  0.040 / 0.040
G14     299.3          69.9                6.9 +/-    1.03       7.3 +/-    1.03  0.110 / 0.240
G18     301.9          42.2                6.3 +/-    0.79       8.8 +/-    0.79  0.110 / 0.220
G20     102.8          39.9               14.6 +/-    2.19      21.3 +/-    2.19  0.150 / 0.290
G22     302.5          13.4                7.1 +/-    3.44      18.4 +/-    3.44  0.130 / 0.260
G31     173.0          47.2                7.5 +/-    1.08       9.9 +/-    1.08  0.040 / 0.040
G32     16.6           64.1                5.2 +/-    0.58       5.7 +/-    0.58  0.030 / 0.050