AN006

Attribute: SAMPLEPERIOD

code		description
Diurnal		Samples collected every 2 hours over the isotope additon (for gas only)
None		No samples collected, see Notes field for explanation
Plateau		Samples collected at plateau determined by conservative solute tracer
Plateau_1		Samples collected approximately 12 hours after the start of isotope addition
Plateau_2		Samples collected approximately 23 hours after the start of isotope addition
Post_1wk		Samples collected approximately 1 week after the isotope addition stopped
Post_24h		Samples collected approximately 24 hours after the isotope addition stopped
Post_72h		Samples collected approximately 3 days after the isotope addition stopped
Pre		Samples collected prior to start of isotope addition