PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-01:27:40
G02     48.4           42.0               10.6 +/-    0.46      14.9 +/-    0.46  0.050 / 0.070
G05     88.7           68.5               11.5 +/-    0.73      12.3 +/-    0.73  0.080 / 0.070
G12     187.6          47.9               14.8 +/-    1.63      19.2 +/-    1.63  0.020 / 0.030
G25     264.9          58.0               13.0 +/-    1.40      15.0 +/-    1.40  0.030 / 0.040
G29     318.5          40.7               12.6 +/-    1.61      18.1 +/-    1.61  0.040 / 0.090