Inter-household variation () | % of total variation* | Intra-household variation () | % of total variation* | Sampling and analytical error () | % of total variation* | |
---|---|---|---|---|---|---|
Data source: exposure assessment study, July–September 1994, n = 111 measurements. | ||||||
*Estimated total variation: ; percentages may not add up due to rounding. | ||||||
Total trihalomethanes | 0.077 | 58 | 0.041 | 31 | 0.013 | 10 |
Chloroform | 0.090 | 52 | 0.067 | 39 | 0.017 | 10 |
Bromodichloromethane | 0.026 | 82 | 0.0002 | 1 | 0.006 | 18 |
Dibromochloromethane | 0.021 | 37 | 0.025 | 45 | 0.010 | 18 |