PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-00:42:50
G02     40.7           48.8               11.1 +/-    1.30      14.2 +/-    1.30  0.030 / 0.040
G05     117.2          67.7               13.2 +/-    0.44      14.2 +/-    0.44  0.040 / 0.040
G12     190.7          58.1               14.8 +/-    0.45      17.1 +/-    0.45  0.030 / 0.030
G25     283.7          57.0               15.6 +/-    2.63      18.2 +/-    2.63  0.030 / 0.030
G29     312.4          33.2                9.7 +/-    1.56      15.9 +/-    1.56  0.050 / 0.040