PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-18:58:10
G02     34.5           54.3                8.2 +/-    0.81       9.9 +/-    0.81  0.030 / 0.040
G05     131.9          65.3                9.4 +/-    0.92      10.2 +/-    0.92  0.030 / 0.040
G06     56.8           10.8                7.9 +/-    1.36      21.8 +/-    1.36  0.090 / 0.350
G12     187.2          59.6               11.6 +/-    0.79      13.2 +/-    0.79  0.090 / 0.350
G19     102.2          10.0                8.5 +/-    2.03      23.7 +/-    2.03  0.030 / 0.050
G25     288.9          56.6                8.1 +/-    1.21       9.5 +/-    1.21  0.030 / 0.060
G29     309.5          29.8                8.1 +/-    1.68      14.2 +/-    1.68  0.040 / 0.060