PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-18:57:30
G02     34.1           54.6                7.8 +/-    0.50       9.3 +/-    0.50  0.020 / 0.040
G05     132.9          65.0                9.0 +/-    0.26       9.9 +/-    0.26  0.030 / 0.030
G06     56.5           11.1                7.7 +/-    1.74      21.1 +/-    1.74  0.040 / 0.040
G12     187.4          60.1               11.3 +/-    0.50      12.9 +/-    0.50  0.040 / 0.050
G19     101.9          10.3                9.8 +/-    1.24      27.3 +/-    1.24  0.040 / 0.030
G25     289.7          56.4               11.1 +/-    3.36      13.1 +/-    3.36  0.040 / 0.050
G29     309.2          29.5                8.1 +/-    1.96      14.3 +/-    1.96  0.110 / 0.160