PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-22:57:40
G02     228.7          71.2               15.3 +/-    0.28      16.1 +/-    0.28  0.030 / 0.050
G05     173.2          11.9               24.1 +/-    3.59      64.4 +/-    3.59  0.030 / 0.050
G06     43.1           63.5               14.4 +/-    0.30      15.9 +/-    0.30  0.200 / 0.300
G12     321.3          46.8               14.0 +/-    0.83      18.4 +/-    0.83  0.180 / 0.340
G17     64.6           28.4               12.7 +/-    1.63      22.9 +/-    1.63  0.030 / 0.030
G19     49.7           43.6               14.7 +/-    1.03      20.2 +/-    1.03  0.030 / 0.020
G24     251.5          37.9               18.0 +/-    1.59      27.1 +/-    1.59  0.030 / 0.030