I want to develop a multiple regression equation to predict pollutant concentrations (dependent variable) in runoff using six meteorological parameters (independent variables).

My experimental design involves me getting three observations under the same environmental/test conditions, i.e. I have three identical experiments that I measure pollutant concentrations in runoff under the same test conditions (the independent variables are the same for all the three experiments). I have collected data from 24 different experiment, so including the repeat measurements, I have in total 72 dependent variables to analyse.

Is there a test in SPSS that I can use to develop prediction models with repeated measurements? If so, is there a manual/paper that I use to help me develop these models?

I hope I supplied enough information for you.

Thanks in advance for helping me answer this question.