PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-17:57:40
G10     273.5          41.2               13.0 +/-    1.28      18.5 +/-    1.28  0.110 / 0.140
G13     40.0           14.8               10.1 +/-    1.32      25.3 +/-    1.32  0.150 / 0.160
G15     53.1           42.9                9.9 +/-    0.48      13.8 +/-    0.48  0.150 / 0.270
G18     318.1          66.6                9.9 +/-    0.93      10.7 +/-    0.93  0.120 / 0.240
G20     58.0           31.8                9.1 +/-    0.94      15.3 +/-    0.94  0.070 / 0.110
G21     38.0           75.4               11.2 +/-    0.75      11.5 +/-    0.75  0.050 / 0.120
G24     116.4          17.5               12.6 +/-    2.01      29.6 +/-    2.01  0.040 / 0.040
G27     314.6          24.6               10.2 +/-    2.80      20.1 +/-    2.80  0.040 / 0.050
G29     166.1          19.9               12.7 +/-    1.35      28.1 +/-    1.35  0.120 / 0.480
G32     205.9          13.3               14.0 +/-    1.80      36.3 +/-    1.80  0.110 / 0.400