PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-00:12:40
G02     22.9           63.7                8.8 +/-    0.78       9.7 +/-    0.78  0.020 / 0.030
G05     150.9          52.9               14.8 +/-    1.34      18.0 +/-    1.34  0.020 / 0.030
G06     48.7           23.4                7.6 +/-    0.68      15.4 +/-    0.68  0.250 / 0.430
G12     222.6          77.7               10.7 +/-    0.66      10.9 +/-    0.66  0.320 / 0.410
G19     90.7           17.6               11.7 +/-    0.83      27.3 +/-    0.83  0.030 / 0.050
G24     215.0          9.9                15.0 +/-   31.87      41.8 +/-   31.87  0.030 / 0.050
G25     309.4          44.9                9.0 +/-    1.81      12.1 +/-    1.81  0.030 / 0.050
G29     299.3          19.6               10.4 +/-    1.60      23.0 +/-    1.60  0.030 / 0.050