PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-14:57:50
G02     29.4           57.7                7.9 +/-    0.93       9.1 +/-    0.93  0.030 / 0.030
G05     147.7          59.2               10.3 +/-    0.67      11.8 +/-    0.67  0.030 / 0.040
G06     52.4           16.3                7.5 +/-    3.01      18.2 +/-    3.01  0.110 / 0.250
G12     198.0          69.8                9.1 +/-    0.40       9.7 +/-    0.40  0.120 / 0.200
G25     300.6          51.2                8.1 +/-    1.90      10.1 +/-    1.90  0.030 / 0.040
G29     305.2          25.7                7.1 +/-    0.86      13.6 +/-    0.86  0.030 / 0.040