The Pareto effect: Usually 80% of your P&L comes from 20% of your setups, symbols, or hours. The table above shows you that 20%.

Cut what's not working: If a setup type has negative contribution and 5+ trades, stop trading it. Probably emotional / chasing.
Concentrate on what works: Your A-grade setups deserve more attention, bigger size, more focused scans.
Beware survivorship: "I made money in tech this year" might just mean tech ran. Compare your alpha vs SPY in Brain vs SPY.