Figure 12. |
Percent dissolved oxygen (DO) saturation in the Mississippi
River at (A) northern and (B) southern Long Term Resource
Monitoring Program study areas in winter random sampling, Upper Mississippi
River System, 19942004. Data are from all strata. No stratified
random sampling data were collected in 2003. The boundary of the box
closest to zero indicates the 25th percentile, a line within the box
marks the median, and the boundary of the box farthest from zero indicates
the 75th percentile. Whiskers (error bars) above and below the box
indicate the 90th and 10th percentiles. |