I would like to ask for your help in determining which test I should run for my samples. Here is my data: I have 4 water samples of Nitrite (mg/l) from 3 sites.

**Site1**:.00171, .00206, .00031, .00066

**Site3**:.00136, .00206, .00415, .00275

**Site4**:.02193, .02298, .02681, .01531

My objective: is to objectively analyze the quality between sites.

My question: What test should I run in SPSS to determine a significance difference (in SPSS)? ANOVA with Turkey HSD?

I appreciate your help!

John,