PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-02:27:10
G02     46.7           43.0                7.5 +/-    1.07      10.5 +/-    1.07  0.030 / 0.050
G05     94.9           68.9                8.3 +/-    0.55       8.9 +/-    0.55  0.030 / 0.040
G12     191.3          53.1               11.0 +/-    1.04      13.4 +/-    1.04  0.040 / 0.030
G25     266.3          58.9                9.5 +/-    1.23      10.9 +/-    1.23  0.050 / 0.050
G29     320.5          43.8                7.8 +/-    0.58      10.7 +/-    0.58  0.030 / 0.030