PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-16:42:30
G02     303.9          80.2                9.3 +/-    0.80       9.5 +/-    0.80  0.030 / 0.030
G05     167.0          28.3                9.9 +/-    1.64      18.0 +/-    1.64  0.030 / 0.030
G06     40.3           43.8                7.8 +/-    1.17      10.6 +/-    1.17  0.130 / 0.190
G12     317.2          65.8                9.7 +/-    0.66      10.5 +/-    0.66  0.130 / 0.180
G17     80.2           17.1                8.3 +/-    1.46      19.6 +/-    1.46  0.090 / 0.110
G19     71.1           28.4                7.9 +/-    1.46      14.3 +/-    1.46  0.080 / 0.170
G24     233.0          25.9               10.4 +/-    1.67      20.0 +/-    1.67  0.080 / 0.090
G25     317.4          23.5               10.1 +/-    2.58      20.3 +/-    2.58  0.110 / 0.130