PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-16:57:50
G02     29.8           57.6                8.5 +/-    1.13       9.8 +/-    1.13  0.120 / 0.230
G05     142.4          62.6                9.6 +/-    0.50      10.7 +/-    0.50  0.160 / 0.210
G06     54.9           13.7                8.1 +/-    1.63      20.7 +/-    1.63  0.030 / 0.040
G12     190.8          63.8                8.6 +/-    0.57       9.5 +/-    0.57  0.040 / 0.040
G19     99.7           12.6                9.2 +/-    2.72      24.3 +/-    2.72  0.020 / 0.040
G25     292.0          56.1                8.5 +/-    4.17      10.0 +/-    4.17  0.020 / 0.030
G29     308.0          28.3                6.2 +/-    1.35      11.3 +/-    1.35  0.040 / 0.040