PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-21:58:10
G02     203.9          38.2               17.5 +/-    0.89      26.2 +/-    0.89  0.150 / 0.180
G06     151.9          72.6               14.3 +/-    0.56      14.9 +/-    0.56  0.170 / 0.200
G12     309.4          18.1               11.9 +/-    1.62      27.4 +/-    1.62  0.080 / 0.110
G17     35.8           49.7               12.1 +/-    0.99      15.3 +/-    0.99  0.080 / 0.080
G19     4.0            64.2               12.2 +/-    0.58      13.4 +/-    0.58  0.060 / 0.110
G24     294.4          39.6               10.6 +/-    6.00      15.5 +/-    6.00  0.070 / 0.120
G28     105.5          29.0               14.3 +/-    1.13      25.6 +/-    1.13  0.030 / 0.030