PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-21:28:00
G03     185.9          11.9               12.8 +/-    3.08      34.2 +/-    3.08  0.090 / 0.160
G07     298.7          42.0               12.5 +/-    3.07      17.7 +/-    3.07  0.130 / 0.140
G08     137.3          34.4               16.7 +/-    1.18      26.7 +/-    1.18  0.070 / 0.080
G09     316.3          70.4               12.0 +/-    0.66      12.7 +/-    0.66  0.060 / 0.090
G16     41.6           31.6               10.6 +/-    1.98      18.0 +/-    1.98  0.060 / 0.060
G23     135.6          69.8               14.2 +/-    0.82      15.0 +/-    0.82  0.080 / 0.070
G27     87.7           36.3               13.3 +/-    1.18      20.6 +/-    1.18  0.030 / 0.030
G30     281.9          21.2               10.7 +/-    2.79      22.8 +/-    2.79  0.040 / 0.050