PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-01:42:40
G02     40.6           48.9               10.2 +/-    1.40      13.0 +/-    1.40  0.030 / 0.040
G05     118.3          67.4               11.7 +/-    0.40      12.5 +/-    0.40  0.030 / 0.040
G06     58.3           9.9                 9.7 +/-    2.84      27.2 +/-    2.84  0.030 / 0.040
G12     191.9          59.2               12.7 +/-    0.44      14.5 +/-    0.44  0.030 / 0.030
G25     285.2          56.7                9.3 +/-    2.12      10.9 +/-    2.12  0.050 / 0.060
G29     312.1          32.9                9.0 +/-    1.73      14.8 +/-    1.73  0.040 / 0.040