PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-04:28:10
G02     44.7           44.7              -18.1 +/-    1.57     -24.5 +/-    1.57  0.030 / 0.040
G05     104.0          68.9                4.5 +/-    0.87       4.8 +/-    0.87  0.030 / 0.030
G06     59.5           10.6                3.0 +/-    1.78       8.1 +/-    1.78  0.030 / 0.050
G12     192.6          56.0                4.4 +/-    0.42       5.2 +/-    0.42  0.050 / 0.050
G25     270.2          59.3                4.7 +/-    1.19       5.4 +/-    1.19  0.040 / 0.030
G29     319.7          43.1                2.9 +/-    0.77       4.0 +/-    0.77  0.040 / 0.030