PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/28-00:12:30
G02     323.8          80.8               10.2 +/-    0.85      10.3 +/-    0.85  0.040 / 0.030
G05     165.4          29.4               15.1 +/-    1.45      26.8 +/-    1.45  0.040 / 0.030
G06     39.5           47.4                9.0 +/-    0.70      11.7 +/-    0.70  0.140 / 0.250
G12     317.4          63.3               10.6 +/-    0.68      11.7 +/-    0.68  0.190 / 0.220
G17     82.0           13.7                9.5 +/-    1.82      24.4 +/-    1.82  0.110 / 0.180
G19     70.4           29.7               10.5 +/-    0.77      18.4 +/-    0.77  0.120 / 0.230
G24     231.1          25.7               13.5 +/-    2.45      26.0 +/-    2.45  0.050 / 0.040
G25     317.4          25.0                8.8 +/-    2.00      17.2 +/-    2.00  0.050 / 0.040