PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-00:27:40
G05     50.1           15.9                5.7 +/-    1.70      13.7 +/-    1.70  0.110 / 0.310
G10     239.4          15.0               10.3 +/-    1.65      25.7 +/-    1.65  0.180 / 0.360
G13     71.1           36.8                8.9 +/-    0.75      13.7 +/-    0.75  0.040 / 0.050
G15     121.0          54.7               10.5 +/-    0.89      12.6 +/-    0.89  0.050 / 0.060
G16     311.2          13.0                7.6 +/-    2.55      19.8 +/-    2.55  0.100 / 0.180
G18     249.7          44.4                9.2 +/-    2.13      12.5 +/-    2.13  0.080 / 0.180
G20     33.5           60.5                8.2 +/-    0.91       9.3 +/-    0.91  0.150 / 0.250
G21     317.1          50.1                7.0 +/-    1.03       8.8 +/-    1.03  0.120 / 0.170
G26     284.1          19.5                7.9 +/-    0.99      17.7 +/-    0.99  0.130 / 0.220
G29     158.4          64.8                8.9 +/-    0.71       9.7 +/-    0.71  0.170 / 0.190