PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-01:57:50
G02     37.1           51.5                7.9 +/-    1.25       9.8 +/-    1.25  0.040 / 0.040
G05     128.5          65.3                9.4 +/-    0.36      10.3 +/-    0.36  0.040 / 0.050
G06     54.7           15.5                6.4 +/-    1.77      15.8 +/-    1.77  0.030 / 0.030
G12     199.7          65.9               10.7 +/-    0.58      11.6 +/-    0.58  0.020 / 0.030
G25     289.9          56.2                5.8 +/-    1.63       6.8 +/-    1.63  0.030 / 0.040
G29     312.1          34.5                7.4 +/-    0.72      11.9 +/-    0.72  0.030 / 0.030