PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-16:27:50
G02     250.3          76.2              -18.6 +/-    0.24     -19.1 +/-    0.24  0.060 / 0.110
G05     170.9          18.6               11.0 +/-    2.17      25.1 +/-    2.17  0.080 / 0.120
G06     39.8           54.1                9.7 +/-    0.63      11.6 +/-    0.63  0.110 / 0.110
G12     321.1          54.8                9.8 +/-    0.83      11.8 +/-    0.83  0.080 / 0.110
G17     71.5           23.3                8.3 +/-    0.73      16.8 +/-    0.73  0.060 / 0.040
G19     61.2           34.9                8.6 +/-    1.16      13.6 +/-    1.16  0.050 / 0.060
G24     242.6          32.6               11.0 +/-    1.40      18.3 +/-    1.40  0.110 / 0.090
G25     316.8          14.2                6.2 +/-    2.21      15.8 +/-    2.21  0.100 / 0.080