PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-21:27:40
G02     32.6           55.3                9.5 +/-    0.84      11.3 +/-    0.84  0.050 / 0.060
G05     137.3          62.5               12.6 +/-    0.63      14.1 +/-    0.63  0.060 / 0.080
G06     53.4           15.9                7.8 +/-    2.51      19.0 +/-    2.51  0.040 / 0.060
G12     202.7          69.3               11.3 +/-    1.27      12.0 +/-    1.27  0.040 / 0.060
G25     297.2          53.1                9.8 +/-    0.70      11.9 +/-    0.70  0.040 / 0.030
G29     308.0          29.4                8.5 +/-    1.62      15.1 +/-    1.62  0.030 / 0.050