PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-00:27:20
G02     41.1           48.5               13.2 +/-    1.31      16.9 +/-    1.31  0.030 / 0.030
G05     115.6          67.9               16.2 +/-    0.40      17.4 +/-    0.40  0.040 / 0.030
G12     190.2          57.2               15.7 +/-    0.49      18.3 +/-    0.49  0.030 / 0.020
G25     282.5          57.2               19.0 +/-    1.04      22.1 +/-    1.04  0.030 / 0.030
G29     312.8          33.7               12.6 +/-    1.68      20.6 +/-    1.68  0.040 / 0.040