TABLE 2.

Pasteurized milk chill chain variables used as model inputs

VariableDescriptionUnitsDistributional assumption(s)
TT Temp during transportation to retail°CNormal (6.66; 1.64)
tT Transportation timehWeibull (1.98; 4.33; shift [0.096])
TR Retail storage temp°CNormal (4.98; 2.9)
tR Retail storage timehLog normal (20; 20; truncate [96])
PD Position in domestic refrigeratorDiscrete (1\2\3\4; 0.25\0.19\0.05\0.51)a
T D-U Domestic storage temp (upper shelf)°CNormal (7.57; 2.95)
T D-M Domestic storage temp (middle shelf)°CNormal (6.31; 2.66)
T D-L Domestic storage temp (lower shelf)°CNormal (6.69; 3.29)
T D-D Domestic storage temp (door shelf)°CNormal (8.40; 3.00)
tD Domestic storage timehCumulative (0; 120; 0\24\48\72\96\120; 0\0.23\0.74\0.96\0.98\1; truncate [120-tT-tR])
  • a Values are for the upper, middle, lower, and door shelves, respectively.