PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-18:58:10
G02     204.5          36.7               10.6 +/-    1.29      16.3 +/-    1.29  0.190 / 0.170
G06     149.3          72.9               10.1 +/-    0.69      10.5 +/-    0.69  0.090 / 0.180
G12     309.9          19.8                9.1 +/-    1.21      20.1 +/-    1.21  0.110 / 0.090
G17     37.8           47.9                9.5 +/-    1.49      12.3 +/-    1.49  0.110 / 0.080
G19     1.5            64.7                9.2 +/-    0.42      10.1 +/-    0.42  0.030 / 0.040
G24     293.7          40.0               10.3 +/-    9.11      15.0 +/-    9.11  0.050 / 0.040
G28     105.3          29.2               10.5 +/-    1.19      18.6 +/-    1.19  0.040 / 0.030