PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-21:43:10
G02     205.8          43.2               13.1 +/-    1.81      18.1 +/-    1.81  0.060 / 0.120
G06     149.3          75.5               13.8 +/-    0.99      14.2 +/-    0.99  0.060 / 0.150
G12     310.4          19.1               10.1 +/-    1.14      22.8 +/-    1.14  0.040 / 0.070
G17     42.9           43.3                9.3 +/-    0.72      12.8 +/-    0.72  0.070 / 0.080
G19     16.7           60.1               10.2 +/-    0.75      11.6 +/-    0.75  0.070 / 0.080
G24     287.4          41.4                8.8 +/-    1.67      12.4 +/-    1.67  0.060 / 0.090
G28     107.5          30.0               12.2 +/-    0.91      21.3 +/-    0.91  0.080 / 0.180