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                3.3 +/-    0.99       5.1 +/-    0.99  0.040 / 0.070
G05     66.5           64.5                5.7 +/-    0.94       6.3 +/-    0.94  0.050 / 0.060
G12     187.6          40.9                6.6 +/-    1.40       9.5 +/-    1.40  0.190 / 0.540
G13     131.6          11.3                5.1 +/-    8.11      13.9 +/-    8.11  0.220 / 0.460
G21     268.3          16.7                7.6 +/-    3.23      18.1 +/-    3.23  0.040 / 0.070
G25     242.0          55.4                6.3 +/-    1.30       7.5 +/-    1.30  0.050 / 0.070
G29     329.6          54.5                3.8 +/-    0.85       4.5 +/-    0.85  0.040 / 0.040