PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-14:43:10
G02     28.8           59.5                7.7 +/-    0.34       8.7 +/-    0.34  0.030 / 0.040
G05     151.5          55.9                9.6 +/-    0.45      11.3 +/-    0.45  0.040 / 0.040
G06     50.3           22.6                4.6 +/-    0.96       9.5 +/-    0.96  0.030 / 0.030
G12     213.6          74.0                7.1 +/-    0.47       7.3 +/-    0.47  0.030 / 0.030
G19     96.5           11.7                9.3 +/-    1.01      25.1 +/-    1.01  0.040 / 0.060
G20     198.3          20.2               10.5 +/-    2.96      23.0 +/-    2.96  0.040 / 0.060
G25     302.9          51.1                7.4 +/-    0.80       9.3 +/-    0.80  0.050 / 0.110
G29     306.3          29.1                5.5 +/-    1.94       9.8 +/-    1.94  0.080 / 0.120