PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-01:58:00
G02     50.5           40.1               10.3 +/-    0.38      14.9 +/-    0.38  0.030 / 0.070
G05     81.4           67.7               13.0 +/-    0.45      14.0 +/-    0.45  0.050 / 0.070
G12     187.1          45.4               15.2 +/-    1.53      20.4 +/-    1.53  0.020 / 0.040
G25     259.9          57.6               13.8 +/-    0.78      16.0 +/-    0.78  0.030 / 0.040
G29     320.1          42.9               12.5 +/-    1.81      17.4 +/-    1.81  0.050 / 0.070