System

Factor

Model

R²

TSF

Fish weight

$y=3.06+1.11x$

0.704

Fish weight

$y=4.142\left(1-{0.011}^x\right)$

0.919

Fish weight, pre-smoking drying time

$y=3.09+1.20x-0.002d$

0.705

Kiln

Fish weight

$y=0.34+0.09x$

0.970

Fish weight, pre-smoking drying time

$y=0.47+0.04x+0.009d$

0.998