PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:27:00
G02     39.3           50.2               11.5 +/-    1.14      14.5 +/-    1.14  0.040 / 0.020
G05     119.7          67.8               13.8 +/-    0.68      14.8 +/-    0.68  0.030 / 0.030
G12     187.7          56.2               13.2 +/-    0.49      15.5 +/-    0.49  0.040 / 0.050
G25     282.2          57.6               10.3 +/-    3.53      12.0 +/-    3.53  0.030 / 0.040
G29     312.4          33.1                9.5 +/-    1.66      15.7 +/-    1.66  0.050 / 0.040