PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-07:42:30
G10     245.2          21.6                6.4 +/-    2.80      13.6 +/-    2.80  0.100 / 0.300
G13     60.6           33.6                4.9 +/-    0.91       8.0 +/-    0.91  0.090 / 0.320
G15     98.1           57.2                8.7 +/-    1.10      10.2 +/-    1.10  0.040 / 0.050
G16     302.3          15.1                2.5 +/-    1.71       6.1 +/-    1.71  0.040 / 0.040
G20     3.3            71.4                4.7 +/-    0.41       4.9 +/-    0.41  0.050 / 0.040
G21     326.8          56.1                4.7 +/-    0.46       5.5 +/-    0.46  0.050 / 0.040
G26     273.3          18.0                5.9 +/-    1.40      13.7 +/-    1.40  0.030 / 0.040
G29     162.6          57.1                8.7 +/-    0.35      10.1 +/-    0.35  0.030 / 0.040