PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-01:27:20
G02     36.5           52.0                8.0 +/-    0.69       9.8 +/-    0.69  0.040 / 0.030
G05     129.8          64.9                9.1 +/-    0.88      10.0 +/-    0.88  0.030 / 0.030
G06     54.4           15.6                6.7 +/-    2.07      16.4 +/-    2.07  0.050 / 0.050
G12     200.4          66.6                8.8 +/-    0.41       9.5 +/-    0.41  0.040 / 0.040
G25     291.2          55.8                8.6 +/-    3.55      10.2 +/-    3.55  0.180 / 0.250
G29     311.4          33.7                6.2 +/-    2.09      10.1 +/-    2.09  0.110 / 0.150