PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-00:57:40
G02     238.4          75.9               12.6 +/-    0.60      13.0 +/-    0.60  0.050 / 0.040
G05     171.3          15.7               19.7 +/-    1.19      48.2 +/-    1.19  0.050 / 0.090
G06     41.1           59.9               12.2 +/-    0.60      13.8 +/-    0.60  0.050 / 0.040
G12     321.5          50.2               12.1 +/-    0.56      15.2 +/-    0.56  0.040 / 0.040
G17     67.5           27.0               10.4 +/-    0.88      19.3 +/-    0.88  0.170 / 0.280
G19     54.9           40.4               12.4 +/-    1.21      18.0 +/-    1.21  0.150 / 0.260
G24     247.1          35.7               14.0 +/-    1.68      21.9 +/-    1.68  0.090 / 0.110