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1: Active solar heating system 2: Community 3: Bird abatement 4: Soil 5: Weed 6: Range 7: Feeder 8: Lead 9: Japan 10: Periplaneta americana 11: Electricity 12: Contamination 13: Change 14: Process 15: Fishery 16: Hazard 17: Function 18: Atmosphere 19: Development 20: Action (As of 01:10)
A 40-hex is the landscape description hexagon that is established on each of the grid points in the EMAP grid. Actual size of these hexagons is 634.5/16 = 39.7 km2.
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