PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:42:20
G02     45.5           45.0               10.9 +/-    1.53      14.7 +/-    1.53  0.030 / 0.030
G05     97.4           69.4               13.2 +/-    0.63      14.0 +/-    0.63  0.040 / 0.030
G12     185.6          48.1               13.7 +/-    0.48      17.7 +/-    0.48  0.040 / 0.040
G25     267.2          58.6               13.1 +/-    2.96      15.0 +/-    2.96  0.040 / 0.040
G29     317.1          38.8               11.3 +/-    1.02      16.7 +/-    1.02  0.040 / 0.050