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1: Active solar heating system 2: Soil 3: Community 4: Range 5: Lead 6: Hazard 7: Feeder 8: Change 9: Electricity 10: Japan 11: Contamination 12: Bird abatement 13: Fishery 14: Atmosphere 15: Weed 16: Carbon 17: Process 18: Periplaneta americana 19: Development 20: Water (As of 15:17)
Off-frame data (the preferred term is --->auxiliary data.)