PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-16:43:10
G02     27.2           59.5                8.5 +/-    0.86       9.7 +/-    0.86  0.030 / 0.030
G05     146.7          60.2                9.4 +/-    0.61      10.7 +/-    0.61  0.020 / 0.030
G06     53.5           15.6                6.5 +/-    1.89      15.9 +/-    1.89  0.040 / 0.040
G12     193.1          66.8                8.7 +/-    0.76       9.4 +/-    0.76  0.030 / 0.030
G19     97.6           14.2                8.0 +/-    1.17      20.3 +/-    1.17  0.050 / 0.050
G25     296.1          54.7                7.0 +/-    2.46       8.4 +/-    2.46  0.050 / 0.060
G29     306.2          26.5                7.3 +/-    0.98      13.9 +/-    0.98  0.160 / 0.230