-- Calculate Maximum PPH (Parcels Per Hour) in 5-minute intervals
-- Where requested destination matches actual destination
-- PPH = (count in 5 minutes) * 12

SELECT 
    MAX(pph) as max_pph,
    MAX(interval_start) as peak_time,
    SUM(parcel_count) as total_parcels
FROM (
    SELECT 
        DATE_FORMAT(t_stamp, '%Y-%m-%d %H:%i:00') as interval_start,
        FLOOR(MINUTE(t_stamp) / 5) as five_min_group,
        COUNT(*) as parcel_count,
        COUNT(*) * 12 as pph
    FROM item_data
    WHERE t_stamp BETWEEN :starttime AND :endtime
        AND asRequested_Dest_ID_0 = sActual_Dest_ID
    GROUP BY 
        DATE_FORMAT(t_stamp, '%Y-%m-%d %H:'),
        FLOOR(MINUTE(t_stamp) / 5)
) as intervals;