PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-22:42:50
G02     204.3          40.0               14.8 +/-    1.19      21.5 +/-    1.19  0.110 / 0.140
G06     149.3          73.8               11.0 +/-    0.82      11.5 +/-    0.82  0.110 / 0.180
G12     310.0          18.9               11.3 +/-    1.26      25.6 +/-    1.26  0.060 / 0.080
G17     36.6           49.1               11.9 +/-    0.39      15.2 +/-    0.39  0.060 / 0.080
G19     7.4            63.2               10.8 +/-    0.62      11.9 +/-    0.62  0.050 / 0.090
G24     292.9          40.0               11.8 +/-    0.69      17.1 +/-    0.69  0.040 / 0.080
G28     106.8          28.0               13.6 +/-    1.16      24.9 +/-    1.16  0.070 / 0.150