PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-21:43:00
G10     277.7          43.3               19.4 +/-    0.41      26.8 +/-    0.41  0.090 / 0.210
G13     39.0           12.2               18.0 +/-    2.31      48.0 +/-    2.31  0.090 / 0.180
G15     51.3           41.0               19.9 +/-    1.52      28.5 +/-    1.52  0.040 / 0.040
G18     323.9          66.7               17.2 +/-    1.05      18.6 +/-    1.05  0.030 / 0.040
G20     61.3           27.6               17.9 +/-    1.25      33.1 +/-    1.25  0.120 / 0.230
G21     42.4           76.4               19.9 +/-    0.67      20.5 +/-    0.67  0.170 / 0.170
G24     113.2          19.5               23.9 +/-    1.07      53.2 +/-    1.07  0.070 / 0.120
G27     312.0          27.3               18.0 +/-    1.46      33.4 +/-    1.46  0.070 / 0.150
G29     166.7          17.2               22.9 +/-    1.45      53.9 +/-    1.45  0.180 / 0.300
G32     207.0          15.4               26.9 +/-    3.17      66.3 +/-    3.17  0.170 / 0.280