PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-23:13:00
G02     239.6          75.7               12.3 +/-    0.43      12.7 +/-    0.43  0.070 / 0.090
G05     171.2          16.1               17.6 +/-    1.32      42.5 +/-    1.32  0.060 / 0.070
G06     41.0           58.5               11.4 +/-    0.70      13.1 +/-    0.70  0.030 / 0.040
G12     321.7          51.7               12.7 +/-    0.94      15.7 +/-    0.94  0.030 / 0.040
G17     68.8           25.4               11.9 +/-    1.34      23.0 +/-    1.34  0.080 / 0.130
G19     55.0           40.5               11.7 +/-    0.33      16.9 +/-    0.33  0.080 / 0.110
G24     245.9          35.3               15.7 +/-    1.08      24.7 +/-    1.08  0.040 / 0.060
G25     316.5          10.9               -8.7 +/-   33.32     -23.7 +/-   33.32  0.040 / 0.050