PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-06:42:20
G02     36.6           52.1                2.9 +/-    1.15       3.6 +/-    1.15  0.110 / 0.120
G05     132.5          64.6                6.0 +/-    0.75       6.5 +/-    0.75  0.080 / 0.120
G06     53.8           17.7                1.6 +/-    2.14       3.8 +/-    2.14  0.040 / 0.020
G12     199.6          66.3                4.3 +/-    0.34       4.6 +/-    0.34  0.030 / 0.020
G25     287.8          57.8                3.0 +/-    0.47       3.4 +/-    0.47  0.030 / 0.040
G29     311.5          33.8                1.1 +/-    1.32       1.8 +/-    1.32  0.030 / 0.030