PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-01:57:50
G02     40.2           49.3               10.8 +/-    1.60      13.8 +/-    1.60  0.040 / 0.040
G05     119.8          67.1               11.0 +/-    0.41      11.8 +/-    0.41  0.040 / 0.040
G06     57.9           10.4                9.3 +/-    1.66      25.8 +/-    1.66  0.020 / 0.030
G12     192.5          60.0               12.4 +/-    0.51      14.1 +/-    0.51  0.030 / 0.030
G25     286.4          56.4                7.9 +/-    1.08       9.3 +/-    1.08  0.030 / 0.040
G29     311.8          32.5                8.8 +/-    1.93      14.6 +/-    1.93  0.040 / 0.040