PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-19:42:30
G02     225.3311       64.4910         12.4501 +/-  0.9197   13.6383 +/-  0.9197  0.070 / 0.140
G06     44.4336        65.0610         10.4530 +/-  0.3511   11.4035 +/-  0.3511  0.060 / 0.140
G12     321.5639       46.6009          8.8989 +/-  1.0556   11.7272 +/-  1.0556  0.040 / 0.070
G17     66.8758        24.2914         10.8193 +/-  0.5377   21.4884 +/-  0.5377  0.060 / 0.060
G19     52.0281        41.3535         10.7095 +/-  1.1749   15.2420 +/-  1.1749  0.070 / 0.100
G24     255.6422       38.7089         11.9151 +/-  1.0854   17.7060 +/-  1.0854  0.050 / 0.100