PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-15:43:10
G02     82.1           13.9                9.7 +/-    2.94      24.6 +/-    2.94  0.040 / 0.050
G05     44.6           36.6                7.2 +/-    0.73      11.2 +/-    0.73  0.080 / 0.060
G13     103.9          32.3               10.3 +/-    0.98      17.2 +/-    0.98  0.110 / 0.100
G15     145.7          35.9               13.2 +/-    1.10      20.6 +/-    1.10  0.090 / 0.100
G18     229.6          26.2               10.8 +/-    1.93      20.5 +/-    1.93  0.040 / 0.040
G20     294.3          85.1                9.0 +/-    0.55       9.1 +/-    0.55  0.050 / 0.030
G21     296.4          37.3                8.9 +/-    1.68      13.5 +/-    1.68  0.090 / 0.300
G25     210.0          27.8               11.5 +/-    2.95      21.1 +/-    2.95  0.090 / 0.260
G26     311.0          15.3                6.3 +/-    2.12      15.5 +/-    2.12  0.090 / 0.150
G29     59.6           85.1                9.8 +/-    0.33       9.9 +/-    0.33  0.080 / 0.150