PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-23:28:10
G02     218.8          64.0               17.6 +/-    1.10      19.3 +/-    1.10  0.080 / 0.100
G06     54.3           74.9               14.5 +/-    0.66      15.0 +/-    0.66  0.060 / 0.080
G12     318.3          36.0               13.1 +/-    1.51      20.5 +/-    1.51  0.060 / 0.100
G17     59.8           29.8               12.6 +/-    1.13      22.1 +/-    1.13  0.100 / 0.100
G19     42.6           47.0               12.7 +/-    0.60      16.6 +/-    0.60  0.130 / 0.320
G24     259.9          40.8               17.2 +/-    4.35      24.6 +/-    4.35  0.160 / 0.330
G28     123.3          15.4               17.3 +/-    2.62      42.6 +/-    2.62  0.030 / 0.020