PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-18:13:00
G02     238.3          73.0               12.6 +/-    0.54      13.1 +/-    0.54  0.030 / 0.040
G05     174.9          13.5               17.0 +/-    3.26      43.9 +/-    3.26  0.030 / 0.040
G06     40.9           58.2               11.0 +/-    0.53      12.7 +/-    0.53  0.040 / 0.040
G12     321.8          53.0               11.3 +/-    1.16      13.8 +/-    1.16  0.060 / 0.040
G17     72.9           19.8                9.7 +/-    1.81      21.5 +/-    1.81  0.140 / 0.260
G19     59.3           36.7                9.3 +/-    0.63      14.4 +/-    0.63  0.150 / 0.300
G24     247.1          35.1               13.0 +/-    2.70      20.7 +/-    2.70  0.090 / 0.110
G25     317.0          16.8               11.5 +/-    2.85      27.4 +/-    2.85  0.060 / 0.090