PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/29-17:42:30
G10     287.9          47.9                8.9 +/-    2.62      11.5 +/-    2.62  0.090 / 0.110
G15     47.3           32.6                7.8 +/-    1.18      13.0 +/-    1.18  0.050 / 0.100
G18     347.5          66.9                8.4 +/-    0.40       9.0 +/-    0.40  0.030 / 0.030
G20     66.2           24.0                9.8 +/-    1.71      19.7 +/-    1.71  0.030 / 0.030
G21     86.1           73.4                9.7 +/-    0.36      10.1 +/-    0.36  0.070 / 0.130
G24     105.5          23.8               11.1 +/-    1.02      22.4 +/-    1.02  0.050 / 0.160
G27     305.5          32.0                8.8 +/-    1.11      14.8 +/-    1.11  0.080 / 0.120
G32     208.8          24.6               11.9 +/-    1.72      23.4 +/-    1.72  0.090 / 0.130