PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-22:27:00
G02     43.9           46.2                7.6 +/-    0.59      10.0 +/-    0.59  0.030 / 0.040
G05     104.0          69.2               10.2 +/-    0.69      10.8 +/-    0.69  0.040 / 0.040
G12     186.8          51.1               10.3 +/-    2.14      12.8 +/-    2.14  0.060 / 0.050
G25     272.5          58.4                9.6 +/-    0.83      11.1 +/-    0.83  0.050 / 0.050
G29     315.6          37.0                9.4 +/-    1.30      14.3 +/-    1.30  0.040 / 0.070