ISBV156 Industry Statistics Based Upon LTMS Data Sets
April Period   =10/1 to 3/31
October Period =4/1 to 9/30
pooled s is by reference material ( example: oil)

                                                 Degrees of      Pooled
  Parameter   Period        N-size  Average Yi      Freedom           s
  ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
                                                                       
  MRV          2024OCT          13      0.0999           12     782.583
  MRV          2025APR           9      0.9495            8     467.559
  SOOT4        2024OCT          13     -0.1618           12      0.3263
  SOOT4        2025APR           9     -0.8364            8      0.1726
  SOOT4        2025OCT           1     -2.3985            0       .    
  SOOT         2024OCT          13     -0.0511           12      0.3905
  SOOT         2025APR           9     -0.5537            8      0.3168
  SOOT5        2024OCT          13     -0.0578           12      0.3892
  SOOT5        2025APR           9     -0.5082            8      0.3764
  SOOT5        2025OCT           1     -1.7065            0       .