PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-01:57:20
G02     16.4           67.7                7.4 +/-    0.84       7.9 +/-    0.84  0.110 / 0.260
G05     155.8          47.1               11.7 +/-    0.91      15.3 +/-    0.91  0.110 / 0.120
G06     44.6           32.0                5.8 +/-    1.26       9.7 +/-    1.26  0.060 / 0.080
G12     274.5          78.4                8.7 +/-    1.35       8.9 +/-    1.35  0.060 / 0.070
G19     86.2           19.2                6.5 +/-    2.64      14.7 +/-    2.64  0.020 / 0.020
G25     312.3          41.6                8.5 +/-    1.16      12.1 +/-    1.16  0.030 / 0.020
G29     297.4          20.8                7.8 +/-    1.60      16.9 +/-    1.60  0.030 / 0.060