PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-01:57:20
G02     50.6           39.6               10.0 +/-    0.73      14.6 +/-    0.73  0.110 / 0.500
G05     80.2           67.7                9.8 +/-    0.52      10.5 +/-    0.52  0.140 / 0.620
G12     189.3          47.6               11.0 +/-    1.68      14.3 +/-    1.68  0.040 / 0.060
G21     262.9          11.1                4.9 +/-   22.47      13.3 +/-   22.47  0.030 / 0.050
G25     256.4          57.9               11.4 +/-    0.89      13.2 +/-    0.89  0.050 / 0.070
G29     323.6          47.5               11.5 +/-    1.09      14.9 +/-    1.09  0.040 / 0.070