Weight residuals (WR) and absolute WR, median weight residu-als(MDWR)and median absolute weight residuals (MDAWR), objection functions were calculated.

• 计算样本加权残差(WR)和绝对值加权残差(absWR)、个体内中位数加权残差(MDWR)和中位数绝对值加权残差(MDAWR)、预测和实测浓度的目标函数。