import pandas as pd, json
df = pd.read_excel('/Users/maxim.ziatdinov/Code/SciLink/planning_session_20260319_123553/knowledge/PWSdatabase.xlsx')
{c: {"mean": df[c].mean(), "median": df[c].median(), "min": df[c].min(), "max": df[c].max(), "count": int(df[c].count())} for c in cols}
print(json.dumps({"answer": answer, "summary": summary}))
