PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-21:57:50
G02     204.6          40.3               13.7 +/-    1.87      19.8 +/-    1.87  0.050 / 0.140
G06     157.1          72.6               12.7 +/-    0.82      13.2 +/-    0.82  0.050 / 0.100
G12     308.9          16.7                8.2 +/-    3.10      19.5 +/-    3.10  0.040 / 0.080
G17     40.5           45.3               10.0 +/-    0.39      13.4 +/-    0.39  0.050 / 0.080
G19     11.6           62.0               10.0 +/-    1.02      11.2 +/-    1.02  0.040 / 0.040
G24     291.1          40.6                9.9 +/-    0.46      14.2 +/-    0.46  0.040 / 0.050
G28     104.8          31.9               12.7 +/-    0.73      21.4 +/-    0.73  0.120 / 0.250