PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-21:42:30
G02     286.4          81.2                8.7 +/-    0.72       8.8 +/-    0.72  0.120 / 0.350
G05     167.5          24.7               13.2 +/-    1.09      26.0 +/-    1.09  0.110 / 0.380
G06     39.3           50.7                8.3 +/-    0.58      10.4 +/-    0.58  0.080 / 0.150
G12     319.7          58.5                7.7 +/-    0.65       8.9 +/-    0.65  0.110 / 0.150
G17     77.5           17.5                8.4 +/-    0.65      19.6 +/-    0.65  0.030 / 0.050
G19     66.0           32.2                8.6 +/-    1.25      14.4 +/-    1.25  0.040 / 0.050
G24     236.0          29.1               10.4 +/-    1.20      18.6 +/-    1.20  0.040 / 0.040
G25     317.4          19.8                8.5 +/-    1.75      18.8 +/-    1.75  0.030 / 0.040