PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-15:57:30
G02     28.1           59.9                9.3 +/-    0.52      10.5 +/-    0.52  0.040 / 0.040
G05     152.8          55.6               11.0 +/-    1.03      13.0 +/-    1.03  0.040 / 0.040
G06     50.6           21.7                6.6 +/-    1.18      13.9 +/-    1.18  0.030 / 0.040
G12     212.0          73.7                8.9 +/-    0.72       9.2 +/-    0.72  0.030 / 0.050
G19     96.7           11.5                9.5 +/-    1.07      25.7 +/-    1.07  0.030 / 0.060
G20     198.0          20.9               11.1 +/-    2.25      23.9 +/-    2.25  0.040 / 0.060
G25     302.2          51.8                9.4 +/-    1.44      11.7 +/-    1.44  0.100 / 0.230
G29     305.9          28.4                7.1 +/-    0.95      12.8 +/-    0.95  0.110 / 0.230