PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-01:28:10
G02     41.4           48.2               11.0 +/-    1.60      14.2 +/-    1.60  0.030 / 0.030
G05     115.4          67.8               12.2 +/-    0.43      13.1 +/-    0.43  0.030 / 0.050
G12     191.1          57.9               13.9 +/-    0.68      16.1 +/-    0.68  0.030 / 0.040
G25     283.1          57.0               14.4 +/-    2.69      16.8 +/-    2.69  0.020 / 0.030
G29     312.8          33.7                9.2 +/-    1.42      14.9 +/-    1.42  0.050 / 0.040