import pandas as pd

# Specific intervals for the collections
intervals = {
    "1B": pd.Interval(0, 1.5, closed="right"),
    "3B": pd.Interval(2.5, 3.5, closed="neither"),
    "7B": pd.Interval(6, 8, closed="neither"),
    "13B": pd.Interval(10, 14, closed="neither"),
    "30B": pd.Interval(25, 35, closed="neither"),
    "65B": pd.Interval(60, 70, closed="neither"),
}