PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-03:13:10
G02     47.2           42.6                6.0 +/-    1.10       8.4 +/-    1.10  0.040 / 0.040
G05     93.7           68.9                7.2 +/-    0.64       7.6 +/-    0.64  0.040 / 0.050
G12     191.1          52.6                9.1 +/-    0.75      11.1 +/-    0.75  0.030 / 0.050
G25     264.8          59.0                8.9 +/-    2.10      10.2 +/-    2.10  0.030 / 0.040
G29     321.2          44.7                6.8 +/-    0.77       9.2 +/-    0.77  0.030 / 0.020