PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-21:27:30
G02     204.4          39.5               17.5 +/-    2.31      25.6 +/-    2.31  0.120 / 0.340
G06     157.3          72.2               14.4 +/-    1.24      15.0 +/-    1.24  0.130 / 0.300
G12     308.6          16.3               10.2 +/-    3.00      24.5 +/-    3.00  0.040 / 0.050
G17     39.8           45.9               10.7 +/-    0.58      14.2 +/-    0.58  0.050 / 0.040
G19     10.7           62.4               12.1 +/-    1.00      13.4 +/-    1.00  0.050 / 0.100
G24     291.9          40.3               12.1 +/-    0.84      17.6 +/-    0.84  0.070 / 0.130
G28     104.2          32.4               13.1 +/-    1.12      21.9 +/-    1.12  0.060 / 0.090