验证水肥控制器EC/pH出口合法性

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd, json
    plans_csv = open_url(____).read()
    plans = pd.read_csv(StringIO(____))
    TOLERANCE = ____
    def validate_fert_outlet(____):
        try: p = json.loads(____)
        except: return ['____']
        plan = plans[plans['____']==plan_id]
        if plan.empty: return ['____']
        target_ec = float(____)
        target_ph = float(____)
        errors = []
        ec_out = p.get(____); ph_out = p.get(____)
        if abs(____) > TOLERANCE:
            errors.append("____" + str(round(abs(____),____)) + "____" + str(____) + "____")
        return errors
    test_cases = [
        (____),
        (____),
    ]
    for payload, plan_id in test_cases:
        errs = validate_fert_outlet(____)
        print("____" + str(____) + "____" + ("____" if not errs else "____" + str(____)))