PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-01:57:10
G02     40.2           48.8                5.5 +/-    1.36       7.1 +/-    1.36  0.040 / 0.050
G05     119.2          67.3                6.8 +/-    0.70       7.3 +/-    0.70  0.040 / 0.040
G06     56.8           12.7                6.0 +/-    1.37      15.8 +/-    1.37  0.030 / 0.030
G12     196.1          61.9                7.9 +/-    0.96       8.9 +/-    0.96  0.030 / 0.040
G25     283.2          57.7               10.8 +/-    2.95      12.5 +/-    2.95  0.020 / 0.030
G29     314.7          37.2                6.8 +/-    0.56      10.3 +/-    0.56  0.020 / 0.030