Metadata for 3_Plutonium_isotope_layers.csv

Column heading	Explanation	Units	Notes	
Code_of_the_sample	Database serial number - unique ID			
Identifier_of_the_sample	UIAR unique label - chemical analysis number			
Dates_of_the_activity_measurements	Date of measurement (long date format)	dd-mmm-yy		
Sampling_area_m2	Size of the area sampled	square metres	
The_top_border_of_a_layer_cm	30cm cores were sectioned into layers (0-2, 2-4, 4-6, 6-8, 8-10, 10-15, 15-20, 20-25 and 25-30 cm). One site was sampled to 110 cm and the core was sectioned into 10 cm slices. 	
The_bottom_border_of_a_layer_cm	30cm cores were sectioned into layers (0-2, 2-4, 4-6, 6-8, 8-10, 10-15, 15-20, 20-25 and 25-30 cm). One site was sampled to 110 cm and the core was sectioned into 10 cm slices. 	
Mass_of_the_layer_kg	Sample mass of each layer of 37mm diameter core	kilogram		
Activity_concentration_137Cs_Bqkg	Activity concentration in soil dry matter 137Cs	bequerel per kilogram		
Relative_uncertainty_of_specific_activity_of_137Cs_%	Relative uncertainty of determination (at 95% confidence interval)	percentage		
Activity_concentration_90Sr_Bqkg	Activity concentration in soil dry matter 90Sr	bequerel per kilogram		
Relative_uncertainty_of_specific_activity_of_90Sr_%	Relative uncertainty of determination (at 95% confidence interval)	percentage		
Activity_concentration_238Pu_Bqkg	Activity concentration in soil dry matter 238Pu	bequerel per kilogram		
Relative_uncertainty_of_specific_activity_of_238Pu_%	Relative uncertainty of determination (at 95% confidence interval)	percentage		
Activity_concentration_239_240Pu_Bqkg	Activity concentration in soil dry matter 239Pu and 240Pu	bequerel per kilogram		
Relative_uncertainty_of_specific_activity_of_239_240Pu_%	Relative uncertainty of determination (at 95% confidence interval)	percentage