PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-17:58:00
G02     356.1          75.6               13.3 +/-    0.60      13.7 +/-    0.60  0.050 / 0.090
G05     166.9          35.9               18.3 +/-    1.32      28.6 +/-    1.32  0.060 / 0.080
G06     43.5           35.1               11.6 +/-    0.31      18.4 +/-    0.31  0.140 / 0.250
G12     295.1          76.8               11.9 +/-    0.60      12.2 +/-    0.60  0.150 / 0.300
G19     81.9           21.9               12.6 +/-    2.17      26.4 +/-    2.17  0.030 / 0.040
G24     225.3          19.0               14.1 +/-    1.50      31.7 +/-    1.50  0.020 / 0.030
G25     315.0          38.3               14.7 +/-    1.97      21.9 +/-    1.97  0.040 / 0.090
G29     292.0          14.9               11.1 +/-    2.38      27.7 +/-    2.38  0.040 / 0.080