Statistics and Definitions

Overall Database Statistics for All Samples
Distribution of All Database Samples by State
State Samples
AL 7
AR 4,184
AZ 18
CA 3,020
CO 348
CT 86
DE 26
FL 1,068
GA 35,515
IA 8,781
ID 123
IL 10,085
IN 33,826
KS 2,109
KY 71
MA 39
MD 425
ME 137
MI 10,042
MN 216
MO 367
MT 19
NC 168,415
ND 95
NE 1,961
NH 245
NJ 160
NM 13
NY 22,417
OH 8,683
OK 641
OR 18
PA 8,538
RI 6
SC 10,374
SD 6
TN 424
TX 5,238
UT 117
VA 17,238
VT 1,714
WA 42
WI 16,782
WV 40

Database Statistics
Number of All Samples in Database: 498,992
Number of All Samples in Database with known location: 373,679
Number of All Lab Results in Database: 5,331,004

Updated 2025-03-31

See the Data Explorer page to browse and download Sample data.

Unit conversion equations used came from the Recommend Methods of Manure Analysis, Second Edition.

Definitions
IQR
Interquartile range
IQR25
25th percentile of values
IQR50
middle value of all samples, same as the median
Median
middle value of all samples
IQR75
75th percentile of values
Min
minimum value of all samples
Mean
average value of all samples
Max
maximum value of all samples
Animal Type Combined Category Animal Type
Swine Swine, Swine - Farrow to Wean, Swine - Farrow to Feeder, Swine - Farrow to Finish, Swine - Gestation, Swine - Finisher, Swine - Boar Stud, Swine - Nursery, Swine - Wean to Finish, Swine - Feeder to Finish
Poultry Poultry, Chicken, Chicken - Breeder, Chicken - Broiler, Chicken - Broiler Layer, Chicken - Layer, Chicken - Pullet, Turkey, Turkey - Meat, Turkey - Hen
Beef Beef, Beef - Breeding, Beef - Calf, Beef - Finisher, Beef - Replacement Heifers, Beef - Stocker
Dairy Dairy, Dairy - Calf and Heifer, Dairy - Calf, Dairy - Heifers, Dairy - Lactating Cow, Dairy - Dry Cow, Dairy - Steer