PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-00:42:10
G02     37.9           50.8                7.5 +/-    1.66       9.4 +/-    1.66  0.040 / 0.050
G05     125.6          66.0                7.1 +/-    0.40       7.7 +/-    0.40  0.040 / 0.050
G06     55.6           13.8                6.3 +/-    2.30      16.2 +/-    2.30  0.050 / 0.050
G12     198.1          64.5                5.8 +/-    0.50       6.3 +/-    0.50  0.050 / 0.050
G25     288.4          56.4                3.9 +/-    4.67       4.6 +/-    4.67  0.030 / 0.030
G29     312.4          34.6                5.6 +/-    1.16       9.0 +/-    1.16  0.030 / 0.030