PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-22:42:10
G02     42.4           47.5                9.6 +/-    0.42      12.5 +/-    0.42  0.020 / 0.030
G05     110.0          68.8               10.4 +/-    0.68      11.1 +/-    0.68  0.030 / 0.040
G12     187.7          53.6               12.1 +/-    1.19      14.6 +/-    1.19  0.090 / 0.050
G25     276.8          58.1               10.8 +/-    1.15      12.5 +/-    1.15  0.040 / 0.060
G29     314.3          35.4               10.7 +/-    2.20      16.8 +/-    2.20  0.050 / 0.070