PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-05:42:50
G10     262.7          35.3                7.5 +/-    1.04      11.8 +/-    1.04  0.140 / 0.290
G13     44.1           21.6                4.8 +/-    2.06      10.1 +/-    2.06  0.100 / 0.260
G15     63.9           51.5                5.7 +/-    1.19       7.0 +/-    1.19  0.170 / 0.140
G16     282.2          13.3                4.5 +/-    1.59      11.7 +/-    1.59  0.280 / 0.250
G20     345.1          69.1                5.8 +/-    0.38       6.1 +/-    0.38  0.050 / 0.030
G21     353.0          69.0                5.6 +/-    0.52       5.9 +/-    0.52  0.050 / 0.040
G24     123.6          11.8                7.1 +/-    2.35      19.1 +/-    2.35  0.320 / 0.290
G27     320.1          16.0                3.8 +/-    2.12       9.1 +/-    2.12  0.120 / 0.200
G29     167.7          36.0                7.2 +/-    0.97      11.2 +/-    0.97  0.250 / 0.260