PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-01:42:10
G02     46.5           43.6               11.9 +/-    1.09      16.3 +/-    1.09  0.030 / 0.040
G05     96.1           68.8               11.5 +/-    0.73      12.2 +/-    0.73  0.030 / 0.050
G12     188.5          50.8               14.6 +/-    0.80      18.2 +/-    0.80  0.040 / 0.030
G25     270.2          58.1               13.3 +/-    0.54      15.4 +/-    0.54  0.030 / 0.030
G29     316.9          38.8               11.0 +/-    1.21      16.3 +/-    1.21  0.050 / 0.040