Curvature (m^{−1}) | a | b (mm^{−2}) | w (mm) | n | F |
---|---|---|---|---|---|

0 | 0.41 | 0 | ∞ | 109 | 566 |

80.6 | 0.77 | 0.01 | 16.7 | 120 | 779 |

172 | 1.24 | 0.11 | 5.04 | 115 | 664 |

256 | 1.58 | 0.16 | 4.18 | 116 | 1005 |

340 | 1.69 | 0.25 | 3.34 | 116 | 1468 |

521 | 1.97 | 0.30 | 3.05 | 116 | 1504 |

694 | 2.03 | 0.34 | 2.86 | 117 | 1052 |

Constants

*a*and*b*were determined by least squares fit of the equation*ae*^{−by2}to the SAI response profiles for the seven cylinders.*F*values were calculated by dividing the regression mean square by the residual mean square; the high*F*values indicate the close fit (all*p*<< 0.001;*n*, number of data points. The width of the profile at half-height*w*= 1.67/√*b*.