PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-21:42:50
G02     25.6           61.3                9.2 +/-    0.73      10.3 +/-    0.73  0.030 / 0.030
G05     147.6          56.6               10.3 +/-    0.38      12.1 +/-    0.38  0.030 / 0.030
G06     50.9           19.4                7.9 +/-    1.66      17.5 +/-    1.66  0.040 / 0.040
G12     202.5          73.1               10.0 +/-    0.47      10.4 +/-    0.47  0.040 / 0.040
G19     93.9           15.8                9.1 +/-    1.93      22.1 +/-    1.93  0.160 / 0.120
G25     305.0          48.9                9.0 +/-    3.87      11.5 +/-    3.87  0.060 / 0.120
G29     302.2          22.2                9.5 +/-    1.74      19.7 +/-    1.74  0.080 / 0.180