PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-15:57:40
G10     285.5          47.7                6.1 +/-    1.18       7.9 +/-    1.18  0.040 / 0.050
G15     48.8           37.4                4.1 +/-    0.59       6.3 +/-    0.59  0.040 / 0.040
G20     331.3          65.0                5.3 +/-    1.10       5.8 +/-    1.10  0.040 / 0.050
G21     71.4           75.6                7.2 +/-    0.76       7.4 +/-    0.76  0.040 / 0.060
G24     101.8          22.5                9.5 +/-    1.71      19.7 +/-    1.71  0.100 / 0.240
G27     310.7          27.8                7.8 +/-    1.51      14.3 +/-    1.51  0.110 / 0.320
G29     167.7          14.6               10.7 +/-    3.02      26.8 +/-    3.02  0.090 / 0.200
G32     207.5          22.7                8.8 +/-    0.90      18.2 +/-    0.90  0.090 / 0.190