PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-16:57:50
G02     23.4           62.0                8.1 +/-    0.83       9.0 +/-    0.83  0.040 / 0.060
G05     149.9          57.5               11.2 +/-    0.68      13.0 +/-    0.68  0.040 / 0.060
G06     52.0           17.7                5.6 +/-    0.57      13.1 +/-    0.57  0.030 / 0.050
G12     195.6          69.8                8.7 +/-    1.07       9.2 +/-    1.07  0.030 / 0.040
G19     95.2           15.9                8.4 +/-    0.60      20.4 +/-    0.60  0.030 / 0.040
G25     300.4          52.6                9.1 +/-    0.63      11.1 +/-    0.63  0.020 / 0.040
G29     304.2          24.3                8.8 +/-    1.73      17.5 +/-    1.73  0.040 / 0.060