PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-16:43:00
G02     244.4          75.8               17.7 +/-    0.31      18.2 +/-    0.31  0.160 / 0.310
G05     174.8          14.6               19.7 +/-    1.97      49.5 +/-    1.97  0.410 / 0.220
G06     40.4           57.1               16.9 +/-    0.67      19.7 +/-    0.67  0.100 / 0.090
G12     321.6          54.1               16.5 +/-    0.84      19.9 +/-    0.84  0.090 / 0.100
G17     74.3           18.8               15.7 +/-    1.49      35.6 +/-    1.49  0.040 / 0.040
G19     61.0           35.7               15.4 +/-    0.31      24.2 +/-    0.31  0.030 / 0.030
G24     245.1          34.0               16.7 +/-    1.98      26.9 +/-    1.98  0.120 / 0.130
G25     317.2          17.4               17.4 +/-    2.09      40.7 +/-    2.09  0.070 / 0.140