PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/07-10:28:00
G02     41.1           47.5                5.8 +/-    0.42       7.5 +/-    0.42  0.030 / 0.030
G05     129.5          67.0                9.1 +/-    0.79       9.8 +/-    0.79  0.030 / 0.030
G12     188.2          58.7                9.0 +/-    1.72      10.3 +/-    1.72  0.040 / 0.110
G25     284.7          57.1                6.7 +/-    1.41       7.9 +/-    1.41  0.050 / 0.080
G29     311.4          32.3                5.3 +/-    1.19       8.9 +/-    1.19  0.040 / 0.050