PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-21:13:10
G02     59.2           33.1                7.6 +/-    2.74      12.6 +/-    2.74  0.240 / 0.390
G05     57.2           60.5                9.0 +/-    0.67      10.2 +/-    0.67  0.230 / 0.480
G12     185.1          33.6               11.5 +/-    1.65      18.7 +/-    1.65  0.080 / 0.060
G13     126.5          15.2               11.0 +/-    2.22      27.3 +/-    2.22  0.060 / 0.100
G15     163.2          13.0               13.8 +/-    2.10      36.1 +/-    2.10  0.080 / 0.100
G21     271.7          16.9                9.7 +/-    0.86      23.1 +/-    0.86  0.080 / 0.090
G25     237.2          51.9                5.0 +/-    2.85       6.1 +/-    2.85  0.150 / 0.390
G29     329.8          55.7                9.6 +/-    1.03      11.4 +/-    1.03  0.120 / 0.330