PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-14:13:10
G02     39.1           50.3                4.6 +/-    0.50       5.7 +/-    0.50  0.040 / 0.040
G05     130.3          67.8                7.6 +/-    0.96       8.2 +/-    0.96  0.040 / 0.050
G12     189.8          57.3                7.7 +/-    1.22       9.0 +/-    1.22  0.030 / 0.040
G25     274.9          60.0                5.2 +/-    1.19       5.9 +/-    1.19  0.040 / 0.040
G29     313.4          34.6                4.1 +/-    0.96       6.5 +/-    0.96  0.030 / 0.030