PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-03:12:40
G02     45.5           44.4                7.0 +/-    1.57       9.5 +/-    1.57  0.060 / 0.040
G05     101.3          68.7                9.1 +/-    0.65       9.7 +/-    0.65  0.040 / 0.050
G12     190.1          53.5                9.8 +/-    0.39      11.9 +/-    0.39  0.030 / 0.030
G25     274.4          57.9                8.8 +/-    3.12      10.2 +/-    3.12  0.030 / 0.030
G29     316.0          37.6                8.0 +/-    1.40      12.1 +/-    1.40  0.040 / 0.040