PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-00:57:40
G02     17.0           67.3                8.7 +/-    0.48       9.4 +/-    0.48  0.130 / 0.460
G05     155.3          47.8               14.8 +/-    1.25      19.1 +/-    1.25  0.160 / 0.540
G06     45.0           30.7                8.4 +/-    0.35      14.5 +/-    0.35  0.060 / 0.130
G12     270.9          78.6               11.5 +/-    0.61      11.7 +/-    0.61  0.060 / 0.080
G19     86.9           18.6               11.4 +/-    0.54      26.0 +/-    0.54  0.030 / 0.030
G24     217.7          13.0               13.1 +/-    2.13      34.2 +/-    2.13  0.030 / 0.030
G25     312.1          41.8                9.3 +/-    2.38      13.2 +/-    2.38  0.040 / 0.050
G29     297.5          20.5               11.1 +/-    1.35      24.1 +/-    1.35  0.040 / 0.050