PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-01:27:50
G02     41.0           48.5               10.7 +/-    0.36      13.8 +/-    0.36  0.040 / 0.050
G05     116.7          67.6               12.1 +/-    1.01      13.0 +/-    1.01  0.040 / 0.050
G12     191.4          58.4               13.8 +/-    1.75      15.9 +/-    1.75  0.020 / 0.040
G25     283.9          56.9               12.9 +/-    1.02      15.1 +/-    1.02  0.020 / 0.050
G29     312.5          33.4               10.3 +/-    1.03      16.8 +/-    1.03  0.040 / 0.070