Diurnal and Seasonal Patterns of Methane Emissions from a Dairy Operation in North China Plain

Table 1

Average animal population and density for each pen during the summer period.

Pen ID	Total population (head)	Density (m^2 head^−1)
1	210	29.2
2	188	32.7
3	187	32.8
4	177	34.7
5	156	39.4
6	173	35.5
7	180	34.1
8	169	36.3