PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/07-19:12:30
G02     285.0          80.7                9.0 +/-    0.66       9.1 +/-    0.66  0.240 / 0.230
G05     167.8          24.9               12.6 +/-    1.51      24.6 +/-    1.51  0.210 / 0.290
G06     39.6           48.8                9.8 +/-    0.66      12.6 +/-    0.66  0.040 / 0.030
G12     319.6          60.0                9.9 +/-    0.99      11.3 +/-    0.99  0.030 / 0.030
G17     77.3           18.5                9.0 +/-    1.89      20.5 +/-    1.89  0.090 / 0.130
G19     66.9           31.4                9.1 +/-    2.50      15.4 +/-    2.50  0.110 / 0.140
G24     236.2          28.7               11.6 +/-    0.85      20.8 +/-    0.85  0.040 / 0.050
G25     317.4          19.9                8.4 +/-    3.01      18.5 +/-    3.01  0.040 / 0.050