PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-04:43:10
G02     36.6           52.0                2.3 +/-    0.41       2.9 +/-    0.41  0.040 / 0.050
G05     131.3          64.6                6.2 +/-    1.00       6.8 +/-    1.00  0.040 / 0.050
G06     53.6           18.0                2.5 +/-    0.91       5.9 +/-    0.91  0.030 / 0.040
G12     200.5          66.7                2.3 +/-    0.92       2.4 +/-    0.92  0.020 / 0.030
G25     289.6          56.9                1.6 +/-    0.84       1.9 +/-    0.84  0.040 / 0.040
G29     312.2          35.0                2.5 +/-    1.70       4.0 +/-    1.70  0.030 / 0.040