PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-18:42:50
G02     256.6          77.5               14.7 +/-    0.42      15.0 +/-    0.42  0.030 / 0.030
G05     172.6          19.0               15.3 +/-    1.78      34.5 +/-    1.78  0.030 / 0.030
G06     40.2           51.9               12.7 +/-    0.59      15.7 +/-    0.59  0.110 / 0.140
G12     321.0          59.5               12.6 +/-    0.42      14.3 +/-    0.42  0.170 / 0.140
G17     77.8           16.1               10.3 +/-    1.65      24.9 +/-    1.65  0.100 / 0.120
G19     65.3           32.9               10.5 +/-    1.07      17.3 +/-    1.07  0.080 / 0.110
G24     240.7          31.5               12.9 +/-    1.58      22.0 +/-    1.58  0.020 / 0.030
G25     317.6          22.4               13.9 +/-    1.40      28.9 +/-    1.40  0.050 / 0.040