PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-01:12:30
G02     353.6          77.2                7.2 +/-    0.36       7.4 +/-    0.36  0.040 / 0.030
G05     162.3          35.8               13.1 +/-    1.14      20.4 +/-    1.14  0.040 / 0.030
G06     42.1           38.7                7.1 +/-    1.16      10.5 +/-    1.16  0.050 / 0.100
G12     309.0          72.5                8.4 +/-    1.27       8.7 +/-    1.27  0.060 / 0.060
G17     85.8           13.9                9.9 +/-    2.27      25.3 +/-    2.27  0.040 / 0.060
G19     75.8           27.4                7.8 +/-    1.25      14.4 +/-    1.25  0.050 / 0.050
G24     227.3          21.8               12.3 +/-    1.96      26.0 +/-    1.96  0.190 / 0.140
G25     317.1          29.3                7.9 +/-    1.29      14.0 +/-    1.29  0.120 / 0.150