PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-22:27:50
G02     52.3           38.4                9.1 +/-    1.83      13.6 +/-    1.83  0.050 / 0.030
G05     73.2           66.6               11.2 +/-    0.66      12.1 +/-    0.66  0.040 / 0.040
G12     187.6          43.7               11.9 +/-    0.75      16.4 +/-    0.75  0.080 / 0.090
G25     252.2          56.7               10.4 +/-    1.62      12.2 +/-    1.62  0.070 / 0.070
G29     324.2          48.1               10.0 +/-    0.86      12.9 +/-    0.86  0.050 / 0.060