PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-21:58:10
G02     32.8           55.7                9.6 +/-    0.60      11.3 +/-    0.60  0.060 / 0.040
G05     136.8          62.9               11.9 +/-    0.81      13.2 +/-    0.81  0.040 / 0.040
G06     54.6           14.0                7.0 +/-    1.41      17.7 +/-    1.41  0.040 / 0.050
G12     193.0          65.3                9.3 +/-    1.19      10.2 +/-    1.19  0.040 / 0.050
G19     99.8           11.4                9.2 +/-    2.28      24.9 +/-    2.28  0.050 / 0.060
G25     295.9          53.9                8.7 +/-    0.97      10.4 +/-    0.97  0.050 / 0.050
G29     307.2          27.3                7.5 +/-    1.35      13.9 +/-    1.35  0.050 / 0.070