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Engineering Statistics Handbook Episode 8 Part 11

Tham khảo tài liệu 'engineering statistics handbook episode 8 part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 6.4.4.1.1 Data Set of Monthly CO2 Concentrations ENGINEERING STATISTICS HANDBOOK hW tools raids lỉEÂtCH BACK Nixf 6. Process or Product Monitoring and Control 6.4. Introduction to Time Series Analysis 6.4.4. Univariate Time Series Models 6.4.4.1. Sample Data Sets 6.4.4.1.1. Data Set of Monthly CO2 Concentrations Source and Background Data This data set contains selected monthly mean CO2 concentrations at the Mauna Loa Observatory from 1974 to 1987. The CO2 concentrations were measured by the continuous infrared analyser of the Geophysical Monitoring for Climatic Change division of NOAA s Air Resources Laboratory. The selection has been for an approximation of background conditions . See Thoning et al. Atmospheric Carbon Dioxide at Mauna Loa Observatory II Analysis of the NOAA GMCC Data 1974-1985 Journal of Geophysical Research submitted for details. This dataset was received from Jim Elkins of NOAA in 1988. Each line contains the CO2 concentration mixing ratio in dry air expressed in the WMO X85 mole fraction scale maintained by the Scripps Institution of Oceanography . In addition it contains the year month and a numeric value for the combined month and year. This combined date is useful for plotting purposes. CO2 Year Month Year Month 333.13 1974.38 1974 5 332.09 1974.46 1974 6 331.10 1974.54 1974 7 329.14 1974.63 1974 8 327.36 1974.71 1974 9 327.29 1974.79 1974 10 328.23 1974.88 1974 11 329.55 1974.96 1974 12 330.62 1975.04 1975 1 331.40 1975.13 1975 2 331.87 1975.21 1975 3 http www.itl.nist.gov div898 handbook pmc section4 pmc4411.htm 1 of 5 5 1 2006 10 35 18 AM 6.4.4.1.1 . Data Set of Monthly CO2 Concentrations 333.18 1975.29 1975 4 333.92 1975.38 1975 5 333.43 1975.46 1975 6 331.85 1975.54 1975 7 330.01 1975.63 1975 8 328.51 1975.71 1975 9 328.41 1975.79 1975 10 329.25 1975.88 1975 11 330.97 1975.96 1975 12 331.60 1976.04 1976 1 332.60 1976.13 1976 2 333.57 1976.21 1976 3 334.72 1976.29 1976 4 334.68 1976.38 1976 5 334.17 1976.46 1976 6 332.96 1976.54 1976 7