PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-22:57:30
G02     280.0          81.1               10.7 +/-    0.65      10.8 +/-    0.65  0.110 / 0.230
G05     167.9          23.6               15.7 +/-    2.09      31.7 +/-    2.09  0.100 / 0.290
G06     39.1           52.8               10.2 +/-    0.43      12.4 +/-    0.43  0.040 / 0.040
G12     320.1          57.0               10.6 +/-    1.12      12.3 +/-    1.12  0.050 / 0.050
G17     76.8           17.7                9.7 +/-    0.81      22.6 +/-    0.81  0.080 / 0.090
G19     64.7           33.2               10.8 +/-    0.79      17.7 +/-    0.79  0.080 / 0.100
G24     236.8          29.9               12.1 +/-    1.81      21.2 +/-    1.81  0.050 / 0.050
G25     317.3          19.1                9.7 +/-    1.50      21.9 +/-    1.50  0.040 / 0.050