PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-22:42:40
G02     42.4           47.5               10.5 +/-    0.57      13.7 +/-    0.57  0.030 / 0.030
G05     110.0          68.8               12.1 +/-    0.66      12.9 +/-    0.66  0.040 / 0.040
G12     187.7          53.6               12.7 +/-    0.60      15.4 +/-    0.60  0.030 / 0.030
G25     276.8          58.1                2.2 +/-    1.48       2.6 +/-    1.48  0.020 / 0.030
G29     314.3          35.4               10.8 +/-    1.26      17.0 +/-    1.26  0.050 / 0.040