PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-21:27:40
G05     46.7           25.8               15.7 +/-    1.75      30.2 +/-    1.75  0.150 / 0.380
G13     83.6           37.4               20.4 +/-    0.68      31.0 +/-    0.68  0.110 / 0.380
G15     131.7          48.9               23.4 +/-    0.89      29.9 +/-    0.89  0.090 / 0.240
G18     241.4          38.4               24.3 +/-    1.11      36.3 +/-    1.11  0.100 / 0.260
G20     24.6           70.1               19.9 +/-    0.43      21.1 +/-    0.43  0.070 / 0.080
G21     309.3          44.9               20.1 +/-    0.64      27.1 +/-    0.64  0.060 / 0.070
G25     198.7          12.2               31.6 +/-    2.82      84.0 +/-    2.82  0.100 / 0.120
G26     294.9          19.4               18.3 +/-    1.80      40.9 +/-    1.80  0.110 / 0.110
G29     149.6          73.5               21.7 +/-    0.72      22.5 +/-    0.72  0.100 / 0.040