PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-18:43:00
G02     244.1          74.7               12.0 +/-    0.46      12.4 +/-    0.46  0.030 / 0.030
G05     173.8          15.8               14.6 +/-    0.66      35.7 +/-    0.66  0.030 / 0.030
G06     40.5           55.6               11.3 +/-    0.59      13.3 +/-    0.59  0.040 / 0.030
G12     321.7          55.8               11.1 +/-    0.50      13.1 +/-    0.50  0.040 / 0.040
G17     74.9           18.3               10.9 +/-    1.99      25.0 +/-    1.99  0.140 / 0.320
G19     61.7           35.2               10.5 +/-    1.37      16.6 +/-    1.37  0.220 / 0.230
G24     244.4          33.7               14.9 +/-    1.62      24.2 +/-    1.62  0.070 / 0.100
G25     317.3          19.3               11.6 +/-    1.44      26.0 +/-    1.44  0.070 / 0.080