PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-20:28:00
G07     320.7          52.8               12.6 +/-    0.48      15.3 +/-    0.48  0.160 / 0.300
G08     118.1          48.4               14.7 +/-    1.14      18.8 +/-    1.14  0.230 / 0.210
G09     227.3          81.7               13.2 +/-    0.40      13.3 +/-    0.40  0.050 / 0.070
G16     44.4           13.9                8.0 +/-    1.66      20.5 +/-    1.66  0.040 / 0.070
G23     151.2          48.2               14.4 +/-    0.50      18.6 +/-    0.50  0.110 / 0.050
G27     63.3           34.8               12.2 +/-    0.86      19.4 +/-    0.86  0.070 / 0.050
G28     231.3          23.2               16.9 +/-    2.40      34.5 +/-    2.40  0.130 / 0.390
G30     296.9          32.3               12.9 +/-    2.52      21.6 +/-    2.52  0.110 / 0.290