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How much lawn does each person mow per hour?

Square meters. Official website, the property right room, shows that lawn mowing is 360m2 per person per hour for Grade I lawn, 280m2 per person per hour for Grade II lawn, Kloc-0/80m2 for Grade III lawn, 60m2 for brush cutter and 40m2 for Grade IV lawn. To sum up, the unit is "m2".