PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-13:58:00
G02     201.2          15.1                7.6 +/-    2.80      18.8 +/-    2.80  0.110 / 0.150
G06     168.8          52.8                9.8 +/-    0.80      11.9 +/-    0.80  0.120 / 0.160
G13     228.9          14.9                8.1 +/-    1.85      20.2 +/-    1.85  0.110 / 0.110
G17     21.7           60.4                9.2 +/-    0.61      10.4 +/-    0.61  0.120 / 0.110
G19     300.7          69.8                7.7 +/-    0.90       8.1 +/-    0.90  0.300 / 0.490
G24     310.8          29.3                6.9 +/-    1.35      12.2 +/-    1.35  0.220 / 0.320
G28     84.4           41.5                7.5 +/-    1.27      10.6 +/-    1.27  0.040 / 0.050
G30     157.5          19.0                8.8 +/-    1.12      19.8 +/-    1.12  0.040 / 0.050