polation models, only one value per station should be used, since the depth value is 
ignored. The file naming convention for the input file is ‘filename’.d3d. The input 
file has the following structure: 
D-23 
Line 1> contains a title that is meaningful to the user that identifies the contents of this dataset. 
Line 2> contains a 2-digit parameter code, comma, and the spelled-out parameter name 
Line 3> contains the start date, comma, and end date of the data 
Line 4> contains the date and time the data were compiled 
Line 5> contains the number of observations that follow 
Lines 6+> contain the easting in UTM Zone 18 meters NAD83, comma, the northing in UTM Zone 18 
meters NAD83, comma, the sample depth in meters, comma, the measured value of the parameter, 
comma, and the station ID 
CHESAPEAKE BAY AND TRIBS - Dissolved Oxygen - Measured Data -06JUL199315JUL1993 
DO,Dissolved Oxygen 
07/06/1993,07/15/1993 
08/11/1997:15:11 
1128 
407056.4377577, 0.5, 7.7000.CB 1.1 
407056.4377577, 1.0, 6.8000.CB1.I 
407056,4377577,2.0. 6.2000.CB1.1 
407056,4377577,3.0, 5.7000.CB1.1 
407056.4377577. 4.0. 
407056.4377577, 5.0, 
411793.4365898, 0.5, 
411793.4365898. 1.0, 
411793,4365898. 2.0, 
411793,4365898. 3.0, 
5.5000.CB 1.1 
5.2000.CB 1.1 
5.9000,CB2.1 
5.7000.CB2.1 
5.7000.CB2.1 
5.7000.CB2.1 
366939.4301041.0.5. 7.5000,WT8.3 
366939,4301041, 1.0, 7.3000,WT8.3 
METADATA FILE (.met) 
A metadata (documentation) file is created during the job. The default filename is 
‘filename’.met. 
Check this file (using the Notepad editor) to see what calculations were performed 
during the job. 
Statistics Report for C:\Vol3D\BD0930701 .est 
Title: CHESAPEAKE BAY AND TRIBS Dissolved Oxygen Measured Data 
06JUL199315JUL1993 
Parameter: Dissolved Oxygen Parameter Code: DO 
Data Period: 07/06/199307/15/1993 
Data File Date: 08/11/1997:15:11 
Observations: 1128 
Maximum Number of Nearest Neighbors: 4 
Minimum Number of Nearest Neighbors: 1 
appendix d 
User Guide and Documentation for the Chesapeake Bay Interpolator 
