PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-00:12:30
G02     19.1           65.8                8.7 +/-    0.92       9.5 +/-    0.92  0.060 / 0.070
G05     153.8          49.6               12.3 +/-    0.97      15.6 +/-    0.97  0.060 / 0.050
G06     46.0           28.6                8.2 +/-    1.56      14.8 +/-    1.56  0.100 / 0.260
G12     259.6          78.9               10.1 +/-    1.00      10.2 +/-    1.00  0.130 / 0.230
G19     88.5           17.4               10.2 +/-    3.63      23.8 +/-    3.63  0.030 / 0.020
G24     216.7          11.8               14.7 +/-    1.71      39.5 +/-    1.71  0.030 / 0.020
G25     311.0          43.1                9.5 +/-    1.02      13.1 +/-    1.02  0.060 / 0.110
G29     298.7          21.3                9.4 +/-    2.13      20.0 +/-    2.13  0.080 / 0.140