PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-00:57:40
G05     52.6           10.9                7.6 +/-    3.21      20.7 +/-    3.21  0.070 / 0.300
G10     243.7          19.5                9.8 +/-    2.77      21.9 +/-    2.77  0.080 / 0.360
G13     63.6           35.2               10.9 +/-    0.98      17.3 +/-    0.98  0.110 / 0.150
G15     109.9          57.5               12.9 +/-    0.38      15.0 +/-    0.38  0.150 / 0.130
G16     305.4          14.3                6.4 +/-    2.62      16.3 +/-    2.62  0.110 / 0.230
G18     256.3          48.8               10.2 +/-    2.97      13.0 +/-    2.97  0.090 / 0.290
G20     37.9           54.7               10.3 +/-    0.64      12.3 +/-    0.64  0.040 / 0.040
G21     323.1          54.1                9.5 +/-    0.86      11.4 +/-    0.86  0.030 / 0.040
G26     277.8          18.3                8.8 +/-    0.92      20.2 +/-    0.92  0.320 / 0.240
G29     161.4          57.9               10.9 +/-    0.36      12.7 +/-    0.36  0.140 / 0.190