PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-01:57:40
G02     49.0           41.4                9.5 +/-    0.48      13.5 +/-    0.48  0.040 / 0.060
G05     86.6           68.3               10.7 +/-    0.40      11.5 +/-    0.40  0.050 / 0.070
G12     187.6          47.4               13.3 +/-    1.80      17.3 +/-    1.80  0.030 / 0.030
G25     263.8          57.9               12.7 +/-    1.14      14.8 +/-    1.14  0.020 / 0.040
G29     318.9          41.3               11.6 +/-    1.10      16.5 +/-    1.10  0.030 / 0.050