Table 4—

Factors affecting the trichloramine concentrations in the air

VariableWithout height of ceilingIncluding height of ceiling
βsdp-valueβsdp-value
Intercept0.025030.07840.75-0.79390.25990.0185
Bathers n0.0062800.001174<0.00010.012100.002132<0.0001
Free chlorine in water mg·L−10.33190.04803<0.00010.41520.09042<0.0001
Disinfection method (chlorine yes/no)0.18930.093620.07790.36230.29010.25
Height of ceiling m0.093700.023160.0001