PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-19:27:10
G02     47.6           43.5               10.5 +/-    1.20      14.4 +/-    1.20  0.030 / 0.020
G05     87.9           69.3               11.4 +/-    0.34      12.1 +/-    0.34  0.020 / 0.030
G12     183.3          42.8               11.9 +/-    0.92      16.6 +/-    0.92  0.050 / 0.060
G25     258.1          58.3               12.2 +/-    1.81      14.0 +/-    1.81  0.040 / 0.080
G29     319.3          41.7               10.9 +/-    0.83      15.4 +/-    0.83  0.050 / 0.050