PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-22:42:50
G02     237.8          74.9               11.9 +/-    0.62      12.3 +/-    0.62  0.050 / 0.060
G05     171.5          15.5               17.2 +/-    2.73      42.2 +/-    2.73  0.040 / 0.060
G06     41.2           59.0               11.8 +/-    0.69      13.5 +/-    0.69  0.070 / 0.120
G12     321.8          51.4               12.0 +/-    0.94      14.9 +/-    0.94  0.080 / 0.110
G17     68.4           25.5               11.0 +/-    1.82      21.2 +/-    1.82  0.090 / 0.220
G19     54.2           41.0               12.0 +/-    0.63      17.2 +/-    0.63  0.180 / 0.230
G24     246.5          35.6               14.5 +/-    0.94      22.8 +/-    0.94  0.030 / 0.040
G25     316.3          10.4              -14.4 +/-   33.08     -39.9 +/-   33.08  0.030 / 0.050