. Author manuscript; available in PMC: 2021 Nov 16.

Published in final edited form as: Ann Work Expo Health. 2020 Aug 6;64(7):705–714. doi: 10.1093/annweh/wxaa025

Table 2.

Results of full-shift^* area air samples for Δ9-THC, in ng/m³

Sample location	Concentration, Day 1	Concentration, Day 2
Main stage, left	180	150
Main stage, right	[53]^†	260
Sound stage	390	190
Field house	170	480

Minimum detectable concentration (MDC)^‡	40
Minimum quantifiable concentration (MQC)^§	140

Sampling times ranged from 260 minutes to 397 minutes.

^†

Values in brackets were between the MDC and MQC. More uncertainty is associated with these values.

^‡

The MDC was calculated by dividing the analytical limit of detection of 50 ng per sample by an average air sample volume of 1.25 m³.

^§

The MQC was calculated by dividing the analytical limit of quantification of 170 ng per sample by an average air sample volume of 1.25 m³.