PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-01:27:30
G02     2.3            74.3                7.0 +/-    0.85       7.2 +/-    0.85  0.310 / 0.440
G05     160.8          39.1               10.8 +/-    0.98      16.0 +/-    0.98  0.090 / 0.170
G06     41.7           38.9                6.1 +/-    0.69       9.0 +/-    0.69  0.090 / 0.120
G12     304.6          72.9                8.2 +/-    0.70       8.5 +/-    0.70  0.070 / 0.130
G19     79.3           23.9                8.9 +/-    2.35      17.8 +/-    2.35  0.100 / 0.110
G24     223.4          18.8               11.0 +/-    2.58      25.0 +/-    2.58  0.100 / 0.120
G25     315.7          34.3                5.5 +/-    1.23       8.8 +/-    1.23  0.030 / 0.020
G29     291.3          15.6                6.1 +/-    4.28      15.0 +/-    4.28  0.030 / 0.020