PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-17:12:30
G02     252.1          77.4               12.7 +/-    0.46      13.0 +/-    0.46  0.140 / 0.210
G05     174.2          16.5               14.0 +/-    1.80      33.6 +/-    1.80  0.200 / 0.290
G06     40.1           54.4               11.5 +/-    1.18      13.8 +/-    1.18  0.040 / 0.040
G12     321.3          56.8               11.6 +/-    0.95      13.6 +/-    0.95  0.030 / 0.040
G17     76.3           17.3               11.1 +/-    2.92      26.2 +/-    2.92  0.110 / 0.110
G19     63.4           34.1               12.2 +/-    1.74      19.7 +/-    1.74  0.130 / 0.120
G24     242.6          32.6               11.8 +/-    1.97      19.7 +/-    1.97  0.130 / 0.290
G25     317.5          19.8               10.2 +/-    1.85      22.6 +/-    1.85  0.130 / 0.330