PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-03:12:40
G02     65.5           27.3                5.7 +/-    1.45      10.7 +/-    1.45  0.080 / 0.130
G05     50.4           53.6                7.5 +/-    0.37       9.0 +/-    0.37  0.100 / 0.120
G12     183.4          25.6               10.1 +/-    1.85      19.5 +/-    1.85  0.420 / 0.280
G13     123.0          19.7                8.6 +/-    1.92      19.2 +/-    1.92  0.150 / 0.200
G15     159.9          17.6                8.6 +/-    2.23      20.0 +/-    2.23  0.150 / 0.390
G20     220.8          26.0               10.4 +/-    2.01      19.9 +/-    2.01  0.390 / 0.390
G21     276.6          21.1                9.2 +/-    1.81      19.6 +/-    1.81  0.100 / 0.180
G25     229.2          47.0                9.2 +/-    2.91      12.0 +/-    2.91  0.090 / 0.350
G29     332.2          60.5                7.5 +/-    0.27       8.5 +/-    0.27  0.030 / 0.030