PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-01:57:40
G02     43.2           46.1                9.6 +/-    0.89      12.7 +/-    0.89  0.040 / 0.050
G05     108.4          68.6               11.4 +/-    0.90      12.2 +/-    0.90  0.040 / 0.050
G06     59.0           10.1                8.4 +/-    2.58      23.5 +/-    2.58  0.030 / 0.040
G12     193.5          57.9               12.5 +/-    0.59      14.5 +/-    0.59  0.030 / 0.050
G25     275.8          58.6                9.1 +/-    0.77      10.4 +/-    0.77  0.030 / 0.030
G29     317.2          40.1               10.9 +/-    1.29      15.8 +/-    1.29  0.040 / 0.020