PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-09:27:40
G02     36.6           52.6                3.3 +/-    1.06       4.1 +/-    1.06  0.020 / 0.030
G05     135.3          63.4                6.2 +/-    0.37       6.8 +/-    0.37  0.030 / 0.030
G06     53.4           18.5                2.6 +/-    3.46       5.9 +/-    3.46  0.030 / 0.030
G12     201.7          67.5                5.4 +/-    0.32       5.8 +/-    0.32  0.030 / 0.040
G20     200.3          24.2                5.4 +/-    3.95      10.7 +/-    3.95  0.210 / 0.260
G25     295.4          54.0                3.9 +/-    2.48       4.7 +/-    2.48  0.140 / 0.240
G29     309.6          31.3                3.1 +/-    1.40       5.3 +/-    1.40  0.270 / 0.240