PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-17:57:40
G02     216.0          58.5               10.0 +/-    0.96      11.5 +/-    0.96  0.100 / 0.310
G06     59.5           74.8                9.6 +/-    0.50       9.9 +/-    0.50  0.120 / 0.330
G12     317.5          33.9                7.4 +/-    1.35      11.9 +/-    1.35  0.040 / 0.060
G17     54.9           34.7                7.5 +/-    1.51      12.0 +/-    1.51  0.040 / 0.070
G19     39.7           48.4                8.5 +/-    1.31      11.0 +/-    1.31  0.070 / 0.090
G24     266.4          41.4                9.0 +/-    1.24      12.8 +/-    1.24  0.070 / 0.080
G28     120.5          19.3                9.8 +/-    1.52      21.9 +/-    1.52  0.050 / 0.080