Soil Heavy Metals - Upstream vs Downstream

Creator: @RealYDT

Archived study

Analyzes the supplied soil_survey_2026.csv, using site_group 0 for upstream and 1 for downstream. The archived workflow summarizes 12 variables by group, plots lead concentrations, and retains a reusable analysis script. It also compares standardized effect sizes and Mann–Whitney U tests with Bonferroni adjustment.

Scope

The analysis uses the supplied upstream/downstream coding and describes differences in this sample. It does not establish the cause of those differences.

Package and provenance

Creator attribution follows the signature on the supplied poster and matches Case Index.csv. The original session export and poster are preserved from AIPOCH-Creator-Use-Cases.zip. This introduction describes the archived research workflow.

Case files

• Session export
• Case poster