PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-00:57:10
G02     40.3           49.2               10.1 +/-    1.55      12.9 +/-    1.55  0.030 / 0.040
G05     118.7          67.4               11.3 +/-    0.66      12.2 +/-    0.66  0.030 / 0.040
G06     58.3           9.7                 9.3 +/-    3.53      26.0 +/-    3.53  0.030 / 0.020
G12     191.3          58.9               12.5 +/-    0.36      14.3 +/-    0.36  0.030 / 0.030
G25     285.0          56.7               11.3 +/-    2.94      13.2 +/-    2.94  0.050 / 0.040
G29     312.1          32.8                8.8 +/-    2.11      14.5 +/-    2.11  0.040 / 0.040