This file contains the signal to noise ratios for Raman-Rayleigh measurements performed at the Combustion Research Facility, Sandia National Laboratories between 1995. The S/N ratios presentd here result from measurements in a range of calibration flames. They give an indication of the random noise associated with measurements in turbulent nonpremixed, pilot-stabilised and bluff-body stabilised flames. S/N ratios for temperature are tabulated versus Temperature. S/N ratios for N2, CH4, O2, H2, H2O, CO and CO2 are tabulated versus species number density. NOTE: These signal to noise ratios are valid for the data reported in the following directories: b4f1, b4f2, b4f3 (Bluff-Body flames) # Densities are divided by 1E18. OH # Density S/N 1.1974540E-02 23.91154 8.6079296E-03 25.47234 5.8011776E-03 25.17933 3.2189873E-03 22.74123 1.5277294E-03 14.19099 5.8013299E-03 21.50782 7.4224407E-03 23.97064 7.8264829E-03 25.73416 8.1384024E-03 24.49111 8.3959084E-03 24.14349 8.4204711E-03 25.03069 7.9997871E-03 25.33057 8.2858428E-03 25.61336 8.0808885E-03 22.29892 6.7243874E-03 25.25630 9.6917823E-03 26.30849 7.4973516E-04 6.794254 6.4646290E-04 8.926044 4.5539872E-04 6.819226 CO2 # Density S/N 0.8892059 27.87620 1.285645 41.91013 1.641622 42.50040 1.995844 59.11787 0.1384380 19.64540 0.1391829 18.97636 0.1391337 20.59195 0.1377590 19.14603 0.1399672 19.67904 0.1398584 17.80525 0.1379775 17.69107 0.1422869 18.37049 0.1389699 19.57918 0.2419386 23.34986 0.2738387 21.59563 0.3368230 25.46293 0.4030543 25.89074 0.3836029 24.66288 0.3674841 24.51432 0.3488137 25.78348 0.3326600 27.05351 0.3162717 25.81541 0.3066677 24.88515 0.2945742 22.54231 0.2639712 23.74468 0.2457156 26.79744 0.2177650 19.44307 0.2484221 22.05006 0.2500145 24.96443 0.2542616 21.33946 0.2552331 23.38327 0.2560885 21.93486 0.2537125 20.33581 0.2495521 21.75247 0.2559794 22.27582 0.2489275 20.93770 0.2045639 20.13613 0.1674185 17.37173 0.1785583 17.20933 0.1676927 17.05237 0.1679675 18.16517 0.1688496 17.30706 0.1698339 16.95301 0.1665339 17.02473 0.1667269 17.34465 0.1697910 18.38007 0.1685662 18.18378 0.2381721 20.82065 0.2265138 21.90745 0.2092249 18.88981 0.1940349 19.49647 0.2406778 21.57869 0.2299888 18.01376 0.6680587 35.91113 1.304248 41.27938 1.095719 43.71787 1.544657 51.27998 CO # Density S/N 1.377538 31.90830 2.101069 36.48272 2.739121 39.59328 0.6799073 24.34878 0.6807154 22.43840 0.6751329 24.40494 0.6670727 20.00751 0.6778127 21.74826 0.6693227 22.42608 0.6730124 20.23167 0.6672673 19.65442 0.6692603 23.51554 0.5678319 22.63280 0.3946273 20.25909 0.1936214 15.77713 8.7157331E-02 12.13533 0.2015054 14.87691 0.1715164 12.97082 0.1958151 13.98835 0.1967603 13.87141 0.1976249 15.03866 0.2019718 13.88436 0.2007192 12.75009 0.1972075 14.00500 H2 # Density S/N 1.221444 26.82959 2.310164 41.15749 2.860350 45.64439 0.3222125 9.097012 0.4456232 10.36790 0.6157247 14.05373 0.8467729 15.33814 1.210689 20.26750 0.9752429 19.84861 0.9818497 20.01580 0.9727257 23.28950 0.9664968 20.10882 0.9774801 22.65647 0.9673773 19.10316 0.9721521 20.68411 0.9624956 18.75700 0.9699947 20.31528 0.3087873 11.47805 0.1777818 8.363533 6.9779582E-02 5.084720 7.2321042E-02 5.433030 0.1893882 8.247711 0.1490696 7.451504 0.1867246 7.302570 0.1875191 10.28972 0.1887619 9.188736 0.1806533 8.077872 0.1922800 7.695095 0.1845345 8.887528 0.1817220 8.387321 0.1830236 8.766193 3.2956272E-02 3.211622 4.4460963E-02 4.198673 6.9707565E-02 5.293580 9.2490904E-02 6.470161 0.9903626 19.44700 1.700889 29.69009 2.951270 37.38385 2.461529 37.20545 1.367858 23.73892 N2 # Density S/N 24.48984 109.4786 23.17855 109.1686 22.26880 79.19239 19.14273 96.23579 17.46231 68.40656 20.94434 74.04266 19.16208 123.6181 17.60699 72.90704 21.06757 74.30986 18.35821 101.6286 15.89254 56.56348 21.05964 75.07775 17.90593 89.21914 18.26675 105.4008 10.64398 72.47723 9.216965 65.12110 23.20325 112.8553 22.41376 117.7867 21.56746 92.82977 24.13771 107.6585 O2 # Density S/N 4.776150 64.44533 4.350722 45.69014 5.284388 42.12721 4.802070 56.81389 4.378052 43.55713 5.271458 41.77779 0.1378087 10.08823 0.2152574 10.86956 0.2847135 12.61652 0.3727934 14.20632 0.4844992 17.33112 0.6516191 19.69637 0.7589446 24.46542 0.8899584 28.59501 1.096439 26.78183 1.356198 28.74193 1.742827 36.23466 0.1594794 9.620880 0.1119037 9.214403 9.2279874E-02 7.875380 7.6775804E-02 6.689553 6.1796237E-02 6.957645 4.8974447E-02 5.793049 4.0003933E-02 5.363806 6.6946357E-02 6.624204 4.4174600E-02 6.513888 4.542787 62.42432 3.892138 38.51966 5.219945 46.49947 4.451479 56.54408 4.524348 56.04352 Temperature S/N 2343.966 129.1253 2295.629 125.5746 2219.503 113.6386 2137.815 126.7255 1999.695 116.5278 2250.467 154.6944 2091.339 172.2461 1949.199 186.0332 1790.432 182.8578 1617.687 183.7194 1405.356 164.1637 1294.935 186.5648 1175.439 188.4957 1019.845 190.4769 873.7640 230.3754 717.2095 203.7099 2054.901 151.1701 2181.719 136.6353 2336.315 139.1330 1784.226 120.2317 1977.767 165.1241 2090.693 116.3684 2123.863 176.5022 2141.371 145.4279 2156.381 164.6412 2187.064 158.2493 2206.338 144.4308 2158.768 136.7270 2193.049 158.2739 2162.908 149.5492 1983.562 157.2911 2021.222 134.4199 1987.832 168.5287 1986.189 141.7308 1978.488 162.4520 1988.363 138.5648 1976.680 161.6461 1981.235 136.9855 1991.628 150.6268 1985.571 149.7214 2205.980 132.4409 2195.898 169.7932 2152.829 168.0924 2115.854 158.0374 2201.333 115.6744 2083.875 141.7270 299.8981 222.0574 315.3572 219.5918 309.5261 221.2217 307.5881 231.7650 839.6117 208.8141 299.3375 244.3326 304.5075 257.6896 303.2723 244.4381 300.2382 261.0420 301.6353 212.4588 303.3260 285.5665 302.5023 237.0363 302.9329 281.4202 613.2032 239.1310 639.7368 194.2561 642.7776 275.1272 647.7071 227.0407 301.1900 365.0223 300.4387 390.9643 299.3881 381.3439 302.2633 419.1588 296.5600 436.4621 297.5874 366.8821 295.8722 385.4111 306.5135 359.1093 299.9231 416.5566 300.2572 358.3239 285.4269 359.5755 300.9466 350.4207 302.6573 370.3802 302.4886 281.8177 299.7487 286.0847 H2O # Density S/N 0.5443166 21.12467 0.5969991 18.25845 0.6523275 20.93682 0.6884057 23.76785 0.7346292 28.01905 0.7612039 29.07182 0.8095139 26.55477 0.8419076 22.54454 0.8687816 22.15157 0.8919963 21.23016 0.9156818 22.72735 0.9513214 25.75479 0.9396393 26.52662 0.9291523 24.99442 0.9154934 25.22154 0.8763709 24.52938 0.6546580 23.26201 0.6537654 23.69481 0.6539543 20.37258 0.6539502 21.30361 0.6528156 25.12615 0.6481498 23.07002 0.6556287 20.98079 0.6472206 24.83789 0.6563085 21.83521 0.5664146 19.20388 0.5653499 18.95550 0.5238894 17.93406 0.4327651 16.47861 0.4056282 19.09972 0.3929563 17.51254 0.3804350 20.31247 0.3623324 17.81013 0.3460406 17.95438 0.3410077 18.21240 0.3338107 18.25924 0.3267754 20.40015 0.3122232 18.73577 0.2806093 16.92603 0.5100017 18.24906 0.5266773 19.39813 0.5260321 18.84546 0.5337942 18.54626 0.5398463 20.25190 0.5489267 18.86559 0.5526452 19.04117 0.5882805 19.82418 0.6116008 21.66653 0.6092257 20.13564 0.6004791 21.33152 0.6092095 21.74846 0.6039560 24.09743 0.6120723 22.04166 0.6061741 20.75570 0.6071842 21.78220 0.6102678 20.90504 0.6079408 22.71031 0.5387379 17.99474 0.5523240 19.95050 0.5627774 20.84146 0.5729734 18.01270 0.5822233 20.92421 0.5869566 20.82866 0.5524579 18.09167 1.147227 20.67053 0.6419455 20.51054 0.2941459 15.59082 0.3082882 16.19687 CH4 # density S/N 0.1680640E+1 50.25000 8.7772295E-01 40.38462 6.2344600E-01 30.33333 4.9535684E-01 23.25000 3.5596192E-01 18.50000 6.5734051E-01 35.18182