PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-01:13:00
G02     33.8           54.4               11.9 +/-    0.28      14.2 +/-    0.28  0.040 / 0.060
G05     136.1          62.6               13.2 +/-    0.57      14.6 +/-    0.57  0.050 / 0.060
G06     52.8           17.8               10.8 +/-    0.91      25.2 +/-    0.91  0.030 / 0.030
G12     204.8          69.8               12.2 +/-    0.79      12.9 +/-    0.79  0.020 / 0.030
G25     296.1          54.0               12.2 +/-    0.94      14.7 +/-    0.94  0.040 / 0.040
G29     309.2          31.4               11.5 +/-    1.07      19.6 +/-    1.07  0.030 / 0.040