PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-22:12:30
G02     219.7          64.5               12.4 +/-    1.10      13.6 +/-    1.10  0.160 / 0.400
G06     51.7           73.2               11.9 +/-    0.35      12.3 +/-    0.35  0.130 / 0.380
G12     318.6          36.8               10.9 +/-    1.97      16.7 +/-    1.97  0.060 / 0.060
G17     60.1           29.9               10.7 +/-    1.28      18.8 +/-    1.28  0.060 / 0.070
G19     43.8           46.2               11.0 +/-    1.10      14.6 +/-    1.10  0.040 / 0.040
G24     259.3          40.5               11.4 +/-    5.21      16.5 +/-    5.21  0.050 / 0.040
G28     123.7          15.1               13.2 +/-    4.06      32.8 +/-    4.06  0.040 / 0.060