PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-13:27:30
G02     30.9           56.6                3.1 +/-    1.21       3.6 +/-    1.21  0.030 / 0.040
G05     149.8          58.7                7.6 +/-    0.54       8.8 +/-    0.54  0.030 / 0.030
G06     52.4           16.3                4.0 +/-    2.54       9.7 +/-    2.54  0.030 / 0.040
G12     195.4          69.1                5.5 +/-    0.45       5.9 +/-    0.45  0.030 / 0.030
G25     300.4          51.4                5.0 +/-    1.70       6.1 +/-    1.70  0.100 / 0.220
G29     305.1          25.6                5.1 +/-    1.52       9.9 +/-    1.52  0.130 / 0.190