PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-00:12:40
G02     258.6          79.8                9.5 +/-    0.66       9.7 +/-    0.66  0.050 / 0.040
G05     169.2          20.6               17.6 +/-    1.32      38.2 +/-    1.32  0.040 / 0.040
G06     40.1           53.9                8.9 +/-    0.61      10.7 +/-    0.61  0.110 / 0.150
G12     321.3          56.3               10.9 +/-    0.93      12.8 +/-    0.93  0.120 / 0.160
G17     72.6           23.0               10.5 +/-    0.88      21.5 +/-    0.88  0.120 / 0.160
G19     60.3           37.2               10.2 +/-    0.81      15.5 +/-    0.81  0.100 / 0.170
G24     241.0          32.4               13.7 +/-    0.97      22.9 +/-    0.97  0.140 / 0.270
G25     317.3          15.0                8.5 +/-    1.71      21.1 +/-    1.71  0.140 / 0.300