PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-20:27:30
G02     261.9          79.1                9.5 +/-    0.64       9.7 +/-    0.64  0.080 / 0.120
G05     169.2          21.6               12.3 +/-    0.93      25.9 +/-    0.93  0.080 / 0.140
G06     40.2           51.0                8.1 +/-    0.51      10.0 +/-    0.51  0.050 / 0.170
G12     321.5          60.7                9.2 +/-    0.93      10.3 +/-    0.93  0.080 / 0.170
G17     75.4           19.6                9.0 +/-    1.09      19.9 +/-    1.09  0.030 / 0.050
G19     61.2           37.1                9.0 +/-    0.35      13.7 +/-    0.35  0.030 / 0.050
G24     238.2          31.1               11.0 +/-    1.03      18.9 +/-    1.03  0.040 / 0.040
G25     317.5          17.4                9.0 +/-    2.84      21.1 +/-    2.84  0.040 / 0.040