PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/07-17:27:40
G02     204.5          36.9               13.6 +/-    0.69      20.8 +/-    0.69  0.050 / 0.120
G06     153.3          72.1               12.8 +/-    0.51      13.4 +/-    0.51  0.060 / 0.120
G12     308.2          16.3                9.7 +/-    3.75      23.4 +/-    3.75  0.060 / 0.110
G17     36.5           48.8                9.8 +/-    1.35      12.6 +/-    1.35  0.060 / 0.120
G19     10.0           62.7               10.9 +/-    0.64      12.1 +/-    0.64  0.140 / 0.110
G24     294.3          39.1               10.3 +/-    2.23      15.2 +/-    2.23  0.170 / 0.090
G28     102.5          34.1               12.3 +/-    1.09      19.9 +/-    1.09  0.320 / 0.270