D-32 
♦ 
y 
dates are the X variable of the time series and the .est files are the Y variables of the 
time series. The julian dates represent dates and times that are based on the decimal 
numbering system, rather than years, months, and days (and time). The julian (or any 
linearly numbered scheme) date file must be created by the user. The following 
example was created by opening the appropriate .mas file in Excel, converting the 
“Start_Date” from mm/dd/yy format to decimal format, and cutting and pasting the 
reformatted date column into a flat file. The file structure is: 
Line l>julian date 
Repeat for each file to be processed. 
30865.00 
30895.00 
30929.00 
30956.00 
EXAMPLE SEGMENTS LIST FILE (.1st) 
Reports on individual segments can be computed sequentially by reading the .est file 
names from a “segments list file” (‘filename’.1st). This file is created manually by 
the user. The file structure is: 
Line l>Number of segments to process 
Line 2+>Segment name (spelling must match those in Appendix A). 
Repeat for each segment to be processed. 
3 
POCTF 
POCOH 
POCMH 
EXAMPLE VOLUME REPORT FILE (.vol) 
The volume of water that contains a specified range of concentrations of a parameter 
can be computed and saved to a volume report file (‘filename’.vol). Volume esti- 
appendix d 
User Guide and Documentation for the Chesapeake Bay Interpolator 
