PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-05:28:00
G02     55.6           35.3                4.0 +/-    1.98       6.4 +/-    1.98  0.200 / 0.470
G05     66.5           64.5                5.6 +/-    0.64       6.1 +/-    0.64  0.210 / 0.300
G12     187.6          40.9                6.5 +/-    0.90       9.3 +/-    0.90  0.060 / 0.060
G13     131.6          11.3                6.7 +/-    1.70      18.3 +/-    1.70  0.050 / 0.050
G21     268.3          16.7                6.5 +/-    1.81      15.6 +/-    1.81  0.240 / 0.460
G25     242.0          55.4                6.2 +/-    1.78       7.3 +/-    1.78  0.180 / 0.290
G29     329.6          54.5                4.4 +/-    0.46       5.2 +/-    0.46  0.060 / 0.070