PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-05:42:30
G10     293.2          51.0               10.4 +/-    1.53      12.9 +/-    1.53  0.040 / 0.050
G15     46.6           30.0                4.6 +/-    1.52       8.1 +/-    1.52  0.040 / 0.050
G20     344.1          65.3                5.5 +/-    0.95       6.0 +/-    0.95  0.040 / 0.050
G21     85.6           75.1                8.7 +/-    1.35       9.0 +/-    1.35  0.040 / 0.050
G24     100.9          25.0                7.8 +/-    1.89      15.3 +/-    1.89  0.080 / 0.090
G27     305.5          31.7               10.2 +/-    1.21      17.3 +/-    1.21  0.070 / 0.110
G32     209.7          24.7               10.0 +/-    2.07      19.7 +/-    2.07  0.050 / 0.110