PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/02-20:28:00
G02     201.5          27.8               18.8 +/-    1.65      34.5 +/-    1.65  0.180 / 0.530
G06     164.8          62.7               17.4 +/-    1.21      19.3 +/-    1.21  0.120 / 0.320
G12     304.2          11.4                7.7 +/-   22.07      20.9 +/-   22.07  0.070 / 0.120
G17     26.8           56.1               13.5 +/-    0.50      16.0 +/-    0.50  0.060 / 0.130
G19     339.0          69.0               14.7 +/-    0.86      15.6 +/-    0.86  0.030 / 0.050
G24     304.2          34.7               14.7 +/-    1.09      23.4 +/-    1.09  0.030 / 0.040
G28     95.9           35.4               14.3 +/-    0.88      22.5 +/-    0.88  0.050 / 0.130