PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-01:12:50
G02     256.6          79.7               10.3 +/-    0.35      10.4 +/-    0.35  0.060 / 0.050
G05     169.3          20.1               14.7 +/-    1.32      32.4 +/-    1.32  0.060 / 0.030
G06     40.1           54.9                9.6 +/-    0.57      11.4 +/-    0.57  0.060 / 0.040
G12     321.3          55.2               10.1 +/-    0.76      12.0 +/-    0.76  0.050 / 0.040
G17     71.7           24.1                9.3 +/-    1.23      18.5 +/-    1.23  0.100 / 0.130
G19     59.9           37.3                9.5 +/-    0.84      14.4 +/-    0.84  0.100 / 0.210
G24     241.9          32.8               12.8 +/-    1.51      21.1 +/-    1.51  0.080 / 0.260
G25     317.2          14.4                7.5 +/-    2.62      19.0 +/-    2.62  0.190 / 0.310