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Table 2 Autocorrelation coefficients for concentrations and for 2nd differences of the concentrations.

From: How to determine life expectancy change of air pollution mortality: a time series study

SO2 concentrations

c(day)

day

day-1

day-2

day-3

day-4

day-5

day

1.00

     

day-1

0.60

1.00

    

day-2

0.38

0.60

1.00

   

day-3

0.31

0.38

0.60

1.00

  

day-4

0.28

0.31

0.38

0.60

1.00

 

day-5

0.28

0.28

0.31

0.38

0.60

1.00

SO2 2nd differences

[c(day) - 2 c(day-1) + c(day-2)]

day

day-1

day-2

day-3

day-4

day-5

day

1.00

     

day-1

-0.51

1.00

    

day-2

-0.06

-0.51

1.00

   

day-3

0.07

-0.06

-0.51

1.00

  

day-4

-0.01

0.06

-0.06

-0.51

1.00

 

day-5

0.01

-0.01

0.06

-0.06

-0.51

1.00

PM10 concentrations

c(day)

day

day-1

day-2

day-3

day-4

day-5

day

1.00

     

day-1

0.82

1.00

    

day-2

0.65

0.82

1.00

   

day-3

0.53

0.65

0.82

1.00

  

day-4

0.46

0.53

0.65

0.82

1.00

 

day-5

0.41

0.46

0.53

0.65

0.82

1.00

PM10 2nd differences

[c(day) - 2 c(day-1) + c(day-2)]

day

day-1

day-2

day-3

day-4

day-5

day

1.00

     

day-1

-0.46

1.00

    

day-2

-0.04

-0.46

1.00

   

day-3

-0.03

-0.04

-0.46

1.00

  

day-4

0.02

-0.03

-0.04

-0.46

1.00

 

day-5

-0.01

0.02

-0.03

-0.04

-0.46

1.00