PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-20:57:50
G02     43.6           46.6                8.9 +/-    0.87      11.7 +/-    0.87  0.030 / 0.030
G05     104.1          69.4               10.9 +/-    0.68      11.5 +/-    0.68  0.030 / 0.030
G12     185.5          49.8               14.0 +/-    0.94      17.7 +/-    0.94  0.040 / 0.060
G25     270.8          58.7               12.6 +/-    3.05      14.5 +/-    3.05  0.030 / 0.050
G29     315.8          37.3               10.0 +/-    1.16      15.2 +/-    1.16  0.050 / 0.050