How does MNQ's overnight trading volume compare to regular trading hours volume

bars_et = to_et(bars)
rth = rth_session(bars_et)
rth_dates = trading_date(rth)

# overnight = all bars not in RTH window
overnight_mask = ~bars_et.index.isin(rth.index)
overnight = bars_et[overnight_mask]

rth_total_vol = rth["volume"].sum()
overnight_total_vol = overnight["volume"].sum()

n_rth_days = rth_dates.nunique()

rth_avg_daily_vol = rth_total_vol / n_rth_days if n_rth_days > 0 else None
overnight_avg_daily_vol = overnight_total_vol / n_rth_days if n_rth_days > 0 else None

ratio_overnight_to_rth = (overnight_total_vol / rth_total_vol) if rth_total_vol > 0 else None

rth_minutes = len(rth)
overnight_minutes = len(overnight)

rth_avg_vol_per_min = (rth_total_vol / rth_minutes) if rth_minutes > 0 else None
overnight_avg_vol_per_min = (overnight_total_vol / overnight_minutes) if overnight_minutes > 0 else None

result = {
    "sample_size": int(n_rth_days),
    "rth_total_volume": float(rth_total_vol),
    "overnight_total_volume": float(overnight_total_vol),
    "rth_avg_daily_volume": float(rth_avg_daily_vol) if rth_avg_daily_vol is not None else None,
    "overnight_avg_daily_volume": float(overnight_avg_daily_vol) if overnight_avg_daily_vol is not None else None,
    "overnight_to_rth_volume_ratio": float(ratio_overnight_to_rth) if ratio_overnight_to_rth is not None else None,
    "rth_avg_volume_per_minute": float(rth_avg_vol_per_min) if rth_avg_vol_per_min is not None else None,
    "overnight_avg_volume_per_minute": float(overnight_avg_vol_per_min) if overnight_avg_vol_per_min is not None else None,
    "rth_minutes_count": int(rth_minutes),
    "overnight_minutes_count": int(overnight_minutes),
}