PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-15:58:00
G07     311.5          48.6               10.1 +/-    0.67      13.0 +/-    0.67  0.060 / 0.060
G08     126.3          43.6               11.5 +/-    1.07      15.9 +/-    1.07  0.050 / 0.050
G09     281.2          82.0               10.8 +/-    0.52      10.9 +/-    0.52  0.090 / 0.150
G16     42.8           18.7                6.5 +/-    4.23      14.8 +/-    4.23  0.180 / 0.190
G23     146.4          53.9               12.2 +/-    0.77      14.7 +/-    0.77  0.050 / 0.050
G27     72.9           36.9               10.0 +/-    0.72      15.3 +/-    0.72  0.060 / 0.050
G28     226.6          16.6                9.9 +/-   10.52      23.6 +/-   10.52  0.240 / 0.260
G30     289.8          25.6                9.2 +/-    1.39      17.8 +/-    1.39  0.310 / 0.310