PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-18:12:50
G02     37.9           50.9                8.9 +/-    0.58      11.1 +/-    0.58  0.030 / 0.050
G05     123.1          67.7                9.7 +/-    0.66      10.3 +/-    0.66  0.050 / 0.050
G12     191.8          59.6                9.1 +/-    0.94      10.4 +/-    0.94  0.040 / 0.050
G25     284.3          56.8                8.7 +/-    0.93      10.1 +/-    0.93  0.030 / 0.060
G29     312.8          34.1                8.6 +/-    0.75      13.9 +/-    0.75  0.050 / 0.060