Table 1.

Summary of differences in MEMS and written times by day and sample

	Sample	Day 1			Day 2			Day 3
		N	Mean (SE)	Median	N	Mean (SE)	Median	N	Mean (SE)	Median
MEMS Time-Book Time (in min)	AW	28	2.4 (1.1)	2.0	22	5.5 (2.4)	1.5	22	4.6 (2.0)	2.0
	AW30	26	21.6 (8.5)	7.0	21	17.1 (8.2)	2.0	20	6.3 (4.3)	1.0
	L	26	3.2 (2.9)	1.0	25	13.2 (11.7)	0	23	1.8 (9.2)	1.0
	AW600	26	0.4 (1.7)	0	23	17.5 (8.6)	3	25	−0.8 (5.8)	0
MEMS Time-Book Time (in min) Trimmed*	AW	28	2.4 (1.1)	2.0	22	5.5 (2.4)	1.5	22	4.6 (12.0)	2.0
	AW30	23	7.9 (2.9)	1.0	19	7.5 (4.3)	1.0	19	2.3 (1.6)	1.0
	L	26	3.2 (2.9)	1.0	22	−5.8 (3.2)	0	20	−1.3 (3.6)	0.5
	AW600	25	0.4 (1.7)	0	20	3.5 (3.2)	0.5	23	−2.1 (2.4)	0

^*Differences > 60 minutes deleted due to suspected MEMS cap error.