From: Second-hand smoke in four English prisons: an air quality monitoring study
Sample locations | |||
---|---|---|---|
PM2.5 | Wing landings | Prison cellsb | Attached to staff membersa |
Total Datasets (average duration, hours) | 48 (6.5) | 13 (4.88) | |
Arithmetic Mean (μg/m3) | 40.08 | 103.1 | |
Standard Deviation | 57.08 | 237.47 | |
Range | 0 – 1124 | 0 – 2684 | |
Median | 30.78 | 27.52 | |
Geometric Mean (μg/m3) | 32.57 | 59.2 | |
Interquartile Range | 16.40 - 35.85 | 10.49 – 90.63 | |
Non-Smoking Locations (average duration, hours) | 6 (5.18) | 8 (5.12) | |
Arithmetic Mean (μg/m3) | 5.90 | 16.98 | |
Standard Deviation | 2.90 | 15.46 | |
Range | 0 – 22 | 1 – 102 | |
Median | 5.71 | 13.39 | |
Geometric Mean (μg/m3) | 5.58 | 14.88 | |
Interquartile Range | 5.29 – 7.77 | 6.9 – 25.82 | |
Smoking Locationsc(average duration, hours) | 42 (6.66) | 5 (4.51) | 22 (4.18) |
Arithmetic Mean (μg/m3) | 43.87 | 226.16 | 23.51 |
Standard Deviation | 58.95 | 333.08 | 34.01 |
Range | 1 – 1124 | 8- 2684 | 2 – 608 |
Median | 32.86 | 162.90 | 19.04 |
Geometric Mean (μg/m3) | 35.57* | 122.52* | 18.57 |
Interquartile Range | 18.9 – 36.97 | 81.61 – 163.14 | 11.37 – 18.59 |