PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-18:42:40
G02     203.4          33.0               13.5 +/-    2.38      22.2 +/-    2.38  0.060 / 0.090
G06     156.4          69.5               10.5 +/-    0.96      11.1 +/-    0.96  0.070 / 0.110
G12     308.0          17.1                9.9 +/-    2.78      23.4 +/-    2.78  0.110 / 0.240
G17     34.6           50.4                8.8 +/-    0.92      11.0 +/-    0.92  0.110 / 0.170
G19     353.4          66.5                8.8 +/-    0.63       9.5 +/-    0.63  0.080 / 0.110
G24     297.7          38.5               10.6 +/-    1.16      15.8 +/-    1.16  0.060 / 0.100
G28     101.9          31.6               10.2 +/-    0.62      17.3 +/-    0.62  0.060 / 0.140