CLAS physics database search results Measurement E28M63 g11 M. Battaglieri 2009 -t M(pi+,pi-) Y_00 Data errors GeV2 GeV mcb/GeV3 mcb/GeV3 0.45 0.405 1.316 0.2269 0.45 0.415 1.349 0.1953 0.45 0.425 1.391 0.1753 0.45 0.435 1.444 0.1673 0.45 0.445 1.506 0.1693 0.45 0.455 1.58 0.1778 0.45 0.465 1.664 0.1897 0.45 0.475 1.76 0.2029 0.45 0.485 1.869 0.2161 0.45 0.495 1.991 0.2291 0.45 0.505 2.127 0.242 0.45 0.515 2.278 0.2554 0.45 0.525 2.446 0.27 0.45 0.535 2.634 0.2865 0.45 0.545 2.844 0.3056 0.45 0.555 3.08 0.3281 0.45 0.565 3.347 0.3547 0.45 0.575 3.649 0.3861 0.45 0.585 3.994 0.4232 0.45 0.595 4.391 0.4672 0.45 0.605 4.85 0.5194 0.45 0.615 5.385 0.5813 0.45 0.625 6.012 0.6551 0.45 0.635 6.751 0.7429 0.45 0.645 7.625 0.8472 0.45 0.655 8.662 0.9709 0.45 0.665 9.894 1.117 0.45 0.675 11.35 1.287 0.45 0.685 13.07 1.484 0.45 0.695 15.07 1.708 0.45 0.705 17.34 1.955 0.45 0.715 19.83 2.217 0.45 0.725 22.41 2.477 0.45 0.735 24.89 2.713 0.45 0.745 26.97 2.898 0.45 0.755 28.38 3.006 0.45 0.765 28.92 3.027 0.45 0.775 28.54 2.962 0.45 0.785 27.37 2.828 0.45 0.795 25.67 2.647 0.45 0.805 23.68 2.44 0.45 0.815 21.61 2.229 0.45 0.825 19.61 2.026 0.45 0.835 17.77 1.837 0.45 0.845 16.1 1.665 0.45 0.855 14.63 1.513 0.45 0.865 13.34 1.379 0.45 0.875 12.21 1.262 0.45 0.885 11.23 1.161 0.45 0.895 10.38 1.075 0.45 0.905 9.634 1.003 0.45 0.915 8.984 0.9437 0.45 0.925 8.413 0.8946 0.45 0.935 7.912 0.8543 0.45 0.945 7.469 0.8206 0.45 0.955 7.077 0.7916 0.45 0.965 6.725 0.767 0.45 0.975 6.396 0.7537 0.45 0.985 6.027 0.7824 0.45 0.995 5.656 0.7987 0.45 1.005 5.471 0.7386 0.45 1.015 5.292 0.7118 0.45 1.025 5.134 0.693 0.45 1.035 4.995 0.6771 0.45 1.045 4.875 0.6621 0.45 1.055 4.771 0.6474 0.45 1.065 4.681 0.6327 0.45 1.075 4.602 0.618 0.45 1.085 4.534 0.6034 0.45 1.095 4.475 0.5891 0.45 1.105 4.424 0.5752 0.45 1.115 4.38 0.5622 0.45 1.125 4.341 0.5504 0.45 1.135 4.309 0.5402 0.45 1.145 4.283 0.5319 0.45 1.155 4.263 0.526 0.45 1.165 4.249 0.5228 0.45 1.175 4.244 0.5224 0.45 1.185 4.246 0.5247 0.45 1.195 4.259 0.5294 0.45 1.205 4.28 0.5359 0.45 1.215 4.312 0.543 0.45 1.225 4.35 0.5496 0.45 1.235 4.391 0.5545 0.45 1.245 4.43 0.557 0.45 1.255 4.456 0.5572 0.45 1.265 4.462 0.5556 0.45 1.275 4.439 0.5532 0.45 1.285 4.383 0.5504 0.45 1.295 4.296 0.5469 0.45 1.305 4.183 0.5421 0.45 1.315 4.055 0.5353 0.45 1.325 3.922 0.5269 0.45 1.335 3.797 0.5177 0.45 1.345 3.69 0.5089 0.45 1.355 3.61 0.5021 0.45 1.365 3.568 0.4992 0.45 1.375 3.569 0.5028 0.45 1.385 3.622 0.5168 0.45 1.395 3.734 0.5459 0.55 0.405 0.889 0.1211 0.55 0.415 0.9393 0.1175 0.55 0.425 0.9941 0.1191 0.55 0.435 1.053 0.1249 0.55 0.445 1.117 0.1337 0.55 0.455 1.184 0.1439 0.55 0.465 1.256 0.1543 0.55 0.475 1.331 0.1642 0.55 0.485 1.41 0.1731 0.55 0.495 1.494 0.1809 0.55 0.505 1.583 0.188 0.55 0.515 1.679 0.1949 0.55 0.525 1.781 0.2024 0.55 0.535 1.893 0.2112 0.55 0.545 2.016 0.2219 0.55 0.555 2.152 0.235 0.55 0.565 2.304 0.2506 0.55 0.575 2.475 0.2689 0.55 0.585 2.671 0.2898 0.55 0.595 2.895 0.3136 0.55 0.605 3.153 0.3404 0.55 0.615 3.453 0.3708 0.55 0.625 3.802 0.4056 0.55 0.635 4.211 0.4462 0.55 0.645 4.692 0.4941 0.55 0.655 5.258 0.5514 0.55 0.665 5.924 0.6203 0.55 0.675 6.706 0.7031 0.55 0.685 7.616 0.8015 0.55 0.695 8.66 0.9161 0.55 0.705 9.832 1.046 0.55 0.715 11.1 1.185 0.55 0.725 12.39 1.325 0.55 0.735 13.6 1.452 0.55 0.745 14.59 1.55 0.55 0.755 15.21 1.606 0.55 0.765 15.38 1.612 0.55 0.775 15.08 1.573 0.55 0.785 14.41 1.498 0.55 0.795 13.49 1.399 0.55 0.805 12.44 1.292 0.55 0.815 11.39 1.185 0.55 0.825 10.39 1.085 0.55 0.835 9.483 0.9952 0.55 0.845 8.682 0.9165 0.55 0.855 7.989 0.8482 0.55 0.865 7.394 0.789 0.55 0.875 6.889 0.738 0.55 0.885 6.461 0.6938 0.55 0.895 6.099 0.6557 0.55 0.905 5.795 0.6229 0.55 0.915 5.54 0.5951 0.55 0.925 5.326 0.5719 0.55 0.935 5.146 0.5532 0.55 0.945 4.993 0.5388 0.55 0.955 4.855 0.5283 0.55 0.965 4.711 0.5212 0.55 0.975 4.496 0.5166 0.55 0.985 3.965 0.5201 0.55 0.995 3.969 0.4706 0.55 1.005 3.908 0.4575 0.55 1.015 3.764 0.4419 0.55 1.025 3.615 0.4261 0.55 1.035 3.475 0.4111 0.55 1.045 3.348 0.3973 0.55 1.055 3.234 0.3848 0.55 1.065 3.134 0.3736 0.55 1.075 3.048 0.3637 0.55 1.085 2.975 0.3552 0.55 1.095 2.914 0.348 0.55 1.105 2.865 0.3422 0.55 1.115 2.827 0.3378 0.55 1.125 2.801 0.3348 0.55 1.135 2.787 0.3333 0.55 1.145 2.783 0.3333 0.55 1.155 2.791 0.3347 0.55 1.165 2.81 0.3376 0.55 1.175 2.84 0.342 0.55 1.185 2.881 0.3479 0.55 1.195 2.932 0.3553 0.55 1.205 2.993 0.3641 0.55 1.215 3.06 0.3743 0.55 1.225 3.128 0.3856 0.55 1.235 3.194 0.3973 0.55 1.245 3.248 0.4085 0.55 1.255 3.284 0.4179 0.55 1.265 3.294 0.4244 0.55 1.275 3.274 0.4267 0.55 1.285 3.224 0.4246 0.55 1.295 3.149 0.4186 0.55 1.305 3.056 0.4102 0.55 1.315 2.956 0.401 0.55 1.325 2.858 0.3929 0.55 1.335 2.771 0.387 0.55 1.345 2.701 0.384 0.55 1.355 2.655 0.3843 0.55 1.365 2.635 0.3884 0.55 1.375 2.645 0.3969 0.55 1.385 2.689 0.4111 0.55 1.395 2.768 0.433 0.65 0.405 0.6771 0.07894 0.65 0.415 0.7061 0.08239 0.65 0.425 0.7407 0.08909 0.65 0.435 0.7806 0.09834 0.65 0.445 0.8254 0.1092 0.65 0.455 0.8744 0.1209 0.65 0.465 0.9272 0.1324 0.65 0.475 0.9833 0.1432 0.65 0.485 1.042 0.1524 0.65 0.495 1.103 0.1599 0.65 0.505 1.167 0.1654 0.65 0.515 1.233 0.169 0.65 0.525 1.302 0.171 0.65 0.535 1.374 0.1721 0.65 0.545 1.451 0.173 0.65 0.555 1.534 0.1749 0.65 0.565 1.624 0.1788 0.65 0.575 1.725 0.1857 0.65 0.585 1.837 0.1963 0.65 0.595 1.965 0.211 0.65 0.605 2.112 0.2296 0.65 0.615 2.282 0.252 0.65 0.625 2.48 0.2779 0.65 0.635 2.714 0.3072 0.65 0.645 2.988 0.3397 0.65 0.655 3.312 0.3757 0.65 0.665 3.694 0.4156 0.65 0.675 4.143 0.4603 0.65 0.685 4.667 0.5105 0.65 0.695 5.268 0.5672 0.65 0.705 5.941 0.6306 0.65 0.715 6.668 0.6998 0.65 0.725 7.408 0.7719 0.65 0.735 8.097 0.8409 0.65 0.745 8.654 0.8983 0.65 0.755 8.998 0.9352 0.65 0.765 9.081 0.9454 0.65 0.775 8.9 0.9283 0.65 0.785 8.505 0.8886 0.65 0.795 7.97 0.8343 0.65 0.805 7.373 0.7735 0.65 0.815 6.774 0.7129 0.65 0.825 6.212 0.6571 0.65 0.835 5.707 0.6084 0.65 0.845 5.267 0.5675 0.65 0.855 4.891 0.5344 0.65 0.865 4.574 0.5083 0.65 0.875 4.31 0.4879 0.65 0.885 4.092 0.4721 0.65 0.895 3.914 0.4599 0.65 0.905 3.769 0.4503 0.65 0.915 3.652 0.4425 0.65 0.925 3.559 0.4357 0.65 0.935 3.484 0.4296 0.65 0.945 3.423 0.4234 0.65 0.955 3.367 0.4167 0.65 0.965 3.3 0.4083 0.65 0.975 3.178 0.3959 0.65 0.985 2.825 0.3804 0.65 0.995 2.716 0.3846 0.65 1.005 2.597 0.3307 0.65 1.015 2.475 0.3039 0.65 1.025 2.374 0.2863 0.65 1.035 2.293 0.2741 0.65 1.045 2.229 0.2656 0.65 1.055 2.182 0.2598 0.65 1.065 2.147 0.2561 0.65 1.075 2.125 0.2541 0.65 1.085 2.113 0.2536 0.65 1.095 2.109 0.2543 0.65 1.105 2.114 0.256 0.65 1.115 2.126 0.2586 0.65 1.125 2.144 0.262 0.65 1.135 2.167 0.2663 0.65 1.145 2.195 0.2713 0.65 1.155 2.227 0.277 0.65 1.165 2.263 0.2835 0.65 1.175 2.301 0.2907 0.65 1.185 2.342 0.2986 0.65 1.195 2.385 0.3071 0.65 1.205 2.428 0.316 0.65 1.215 2.471 0.3249 0.65 1.225 2.51 0.3333 0.65 1.235 2.544 0.3407 0.65 1.245 2.569 0.3466 0.65 1.255 2.582 0.3506 0.65 1.265 2.582 0.3526 0.65 1.275 2.566 0.3526 0.65 1.285 2.535 0.351 0.65 1.295 2.493 0.3481 0.65 1.305 2.444 0.3443 0.65 1.315 2.391 0.3398 0.65 1.325 2.339 0.3353 0.65 1.335 2.293 0.3311 0.65 1.345 2.256 0.3282 0.65 1.355 2.23 0.3272 0.65 1.365 2.217 0.3293 0.65 1.375 2.222 0.3355 0.65 1.385 2.244 0.3475 0.65 1.395 2.288 0.3672 0.75 0.405 0.4956 0.05964 0.75 0.415 0.5247 0.06372 0.75 0.425 0.5572 0.06867 0.75 0.435 0.5927 0.07409 0.75 0.445 0.631 0.07968 0.75 0.455 0.6718 0.08526 0.75 0.465 0.7148 0.09068 0.75 0.475 0.7598 0.09586 0.75 0.485 0.8066 0.1007 0.75 0.495 0.8551 0.1053 0.75 0.505 0.9053 0.1095 0.75 0.515 0.9574 0.1136 0.75 0.525 1.012 0.1175 0.75 0.535 1.069 0.1216 0.75 0.545 1.13 0.1262 0.75 0.555 1.195 0.1316 0.75 0.565 1.265 0.1381 0.75 0.575 1.343 0.1459 0.75 0.585 1.429 0.1552 0.75 0.595 1.526 0.1661 0.75 0.605 1.637 0.1786 0.75 0.615 1.763 0.1929 0.75 0.625 1.909 0.209 0.75 0.635 2.079 0.2272 0.75 0.645 2.278 0.2479 0.75 0.655 2.511 0.2716 0.75 0.665 2.784 0.2989 0.75 0.675 3.103 0.3307 0.75 0.685 3.474 0.3678 0.75 0.695 3.898 0.4105 0.75 0.705 4.374 0.4589 0.75 0.715 4.886 0.5114 0.75 0.725 5.408 0.565 0.75 0.735 5.893 0.6148 0.75 0.745 6.285 0.6544 0.75 0.755 6.528 0.678 0.75 0.765 6.584 0.6821 0.75 0.775 6.453 0.6674 0.75 0.785 6.168 0.6381 0.75 0.795 5.783 0.6 0.75 0.805 5.352 0.5586 0.75 0.815 4.916 0.5181 0.75 0.825 4.504 0.4804 0.75 0.835 4.13 0.4466 0.75 0.845 3.799 0.4165 0.75 0.855 3.512 0.3898 0.75 0.865 3.264 0.366 0.75 0.875 3.052 0.3447 0.75 0.885 2.871 0.3256 0.75 0.895 2.715 0.3085 0.75 0.905 2.582 0.2934 0.75 0.915 2.468 0.2804 0.75 0.925 2.369 0.2697 0.75 0.935 2.283 0.2614 0.75 0.945 2.207 0.2559 0.75 0.955 2.138 0.2531 0.75 0.965 2.075 0.253 0.75 0.975 2.011 0.2558 0.75 0.985 1.931 0.2735 0.75 0.995 1.723 0.2356 0.75 1.005 1.661 0.2122 0.75 1.015 1.633 0.2092 0.75 1.025 1.62 0.2085 0.75 1.035 1.615 0.2083 0.75 1.045 1.617 0.2083 0.75 1.055 1.625 0.2088 0.75 1.065 1.636 0.2101 0.75 1.075 1.652 0.2123 0.75 1.085 1.67 0.2155 0.75 1.095 1.69 0.2196 0.75 1.105 1.713 0.2246 0.75 1.115 1.738 0.2301 0.75 1.125 1.765 0.2361 0.75 1.135 1.794 0.2422 0.75 1.145 1.824 0.2483 0.75 1.155 1.856 0.2542 0.75 1.165 1.89 0.2599 0.75 1.175 1.926 0.2652 0.75 1.185 1.964 0.2703 0.75 1.195 2.003 0.2753 0.75 1.205 2.044 0.2803 0.75 1.215 2.085 0.2854 0.75 1.225 2.125 0.2908 0.75 1.235 2.16 0.2965 0.75 1.245 2.188 0.3027 0.75 1.255 2.206 0.3093 0.75 1.265 2.21 0.3161 0.75 1.275 2.199 0.3228 0.75 1.285 2.173 0.3288 0.75 1.295 2.135 0.3336 0.75 1.305 2.089 0.3366 0.75 1.315 2.039 0.3373 0.75 1.325 1.991 0.336 0.75 1.335 1.947 0.3331 0.75 1.345 1.912 0.3293 0.75 1.355 1.888 0.3256 0.75 1.365 1.878 0.3228 0.75 1.375 1.882 0.3221 0.75 1.385 1.902 0.3246 0.75 1.395 1.941 0.3317 0.85 0.405 0.403 0.0524 0.85 0.415 0.4239 0.05511 0.85 0.425 0.4487 0.05855 0.85 0.435 0.4769 0.06247 0.85 0.445 0.5082 0.06666 0.85 0.455 0.542 0.07097 0.85 0.465 0.5777 0.0753 0.85 0.475 0.615 0.07959 0.85 0.485 0.6535 0.08383 0.85 0.495 0.6929 0.08805 0.85 0.505 0.7331 0.09229 0.85 0.515 0.7742 0.09661 0.85 0.525 0.8165 0.1011 0.85 0.535 0.8604 0.1057 0.85 0.545 0.9069 0.1107 0.85 0.555 0.9567 0.116 0.85 0.565 1.011 0.1217 0.85 0.575 1.072 0.128 0.85 0.585 1.141 0.1349 0.85 0.595 1.22 0.1428 0.85 0.605 1.311 0.1518 0.85 0.615 1.419 0.1623 0.85 0.625 1.545 0.1746 0.85 0.635 1.694 0.1892 0.85 0.645 1.871 0.2067 0.85 0.655 2.08 0.2276 0.85 0.665 2.328 0.2525 0.85 0.675 2.619 0.2821 0.85 0.685 2.957 0.3168 0.85 0.695 3.344 0.3568 0.85 0.705 3.775 0.4016 0.85 0.715 4.235 0.4496 0.85 0.725 4.695 0.4977 0.85 0.735 5.111 0.5408 0.85 0.745 5.43 0.5734 0.85 0.755 5.601 0.5901 0.85 0.765 5.593 0.5887 0.85 0.775 5.411 0.5701 0.85 0.785 5.092 0.5381 0.85 0.795 4.69 0.4978 0.85 0.805 4.254 0.4544 0.85 0.815 3.826 0.4117 0.85 0.825 3.429 0.3725 0.85 0.835 3.077 0.338 0.85 0.845 2.771 0.3085 0.85 0.855 2.512 0.2838 0.85 0.865 2.294 0.2635 0.85 0.875 2.112 0.2468 0.85 0.885 1.963 0.2333 0.85 0.895 1.841 0.2225 0.85 0.905 1.742 0.2138 0.85 0.915 1.662 0.2073 0.85 0.925 1.598 0.2026 0.85 0.935 1.548 0.2001 0.85 0.945 1.508 0.2001 0.85 0.955 1.475 0.2032 0.85 0.965 1.444 0.2109 0.85 0.975 1.404 0.225 0.85 0.985 1.326 0.2508 0.85 0.995 1.328 0.2264 0.85 1.005 1.302 0.1943 0.85 1.015 1.294 0.1833 0.85 1.025 1.295 0.1781 0.85 1.035 1.302 0.1758 0.85 1.045 1.314 0.1753 0.85 1.055 1.33 0.1758 0.85 1.065 1.349 0.1772 0.85 1.075 1.371 0.1793 0.85 1.085 1.395 0.1819 0.85 1.095 1.42 0.185 0.85 1.105 1.445 0.1885 0.85 1.115 1.472 0.1923 0.85 1.125 1.499 0.1965 0.85 1.135 1.526 0.2009 0.85 1.145 1.553 0.2056 0.85 1.155 1.582 0.2106 0.85 1.165 1.611 0.2159 0.85 1.175 1.642 0.2214 0.85 1.185 1.674 0.2272 0.85 1.195 1.71 0.2334 0.85 1.205 1.749 0.2401 0.85 1.215 1.791 0.2473 0.85 1.225 1.836 0.255 0.85 1.235 1.884 0.2634 0.85 1.245 1.931 0.2722 0.85 1.255 1.975 0.2811 0.85 1.265 2.01 0.2898 0.85 1.275 2.033 0.2977 0.85 1.285 2.041 0.3045 0.85 1.295 2.032 0.3095 0.85 1.305 2.008 0.3125 0.85 1.315 1.972 0.3135 0.85 1.325 1.927 0.3127 0.85 1.335 1.88 0.3106 0.85 1.345 1.835 0.308 0.85 1.355 1.795 0.3056 0.85 1.365 1.766 0.3046 0.85 1.375 1.75 0.306 0.85 1.385 1.751 0.3113 0.85 1.395 1.773 0.322 0.95 0.405 0.3292 0.05459 0.95 0.415 0.35 0.05656 0.95 0.425 0.3733 0.05875 0.95 0.435 0.3988 0.06097 0.95 0.445 0.4263 0.06315 0.95 0.455 0.4556 0.06528 0.95 0.465 0.4862 0.0674 0.95 0.475 0.5182 0.06962 0.95 0.485 0.5513 0.07202 0.95 0.495 0.5856 0.0747 0.95 0.505 0.6212 0.07773 0.95 0.515 0.6583 0.08115 0.95 0.525 0.6972 0.08499 0.95 0.535 0.7385 0.08927 0.95 0.545 0.7827 0.09398 0.95 0.555 0.8306 0.09919 0.95 0.565 0.8831 0.105 0.95 0.575 0.9412 0.1114 0.95 0.585 1.006 0.1188 0.95 0.595 1.079 0.1271 0.95 0.605 1.162 0.1367 0.95 0.615 1.257 0.1477 0.95 0.625 1.366 0.1604 0.95 0.635 1.492 0.1749 0.95 0.645 1.637 0.1916 0.95 0.655 1.804 0.2107 0.95 0.665 1.997 0.2326 0.95 0.675 2.218 0.2574 0.95 0.685 2.469 0.2854 0.95 0.695 2.75 0.3163 0.95 0.705 3.054 0.3497 0.95 0.715 3.371 0.3841 0.95 0.725 3.677 0.4168 0.95 0.735 3.942 0.4445 0.95 0.745 4.129 0.4633 0.95 0.755 4.206 0.4704 0.95 0.765 4.158 0.4652 0.95 0.775 3.994 0.4485 0.95 0.785 3.743 0.4229 0.95 0.795 3.445 0.3922 0.95 0.805 3.135 0.3604 0.95 0.815 2.838 0.3301 0.95 0.825 2.571 0.303 0.95 0.835 2.338 0.28 0.95 0.845 2.141 0.2608 0.95 0.855 1.978 0.2454 0.95 0.865 1.844 0.233 0.95 0.875 1.735 0.2234 0.95 0.885 1.647 0.2159 0.95 0.895 1.577 0.2104 0.95 0.905 1.521 0.2067 0.95 0.915 1.477 0.2046 0.95 0.925 1.442 0.2041 0.95 0.935 1.413 0.2055 0.95 0.945 1.389 0.2089 0.95 0.955 1.366 0.2144 0.95 0.965 1.337 0.2201 0.95 0.975 1.292 0.2158 0.95 0.985 1.2 0.1734 0.95 0.995 1.21 0.2119 0.95 1.005 1.172 0.1683 0.95 1.015 1.149 0.156 0.95 1.025 1.136 0.1507 0.95 1.035 1.131 0.1486 0.95 1.045 1.133 0.1484 0.95 1.055 1.142 0.1495 0.95 1.065 1.155 0.1515 0.95 1.075 1.172 0.1541 0.95 1.085 1.193 0.1574 0.95 1.095 1.216 0.1611 0.95 1.105 1.242 0.1653 0.95 1.115 1.269 0.1698 0.95 1.125 1.299 0.1747 0.95 1.135 1.329 0.1799 0.95 1.145 1.362 0.1855 0.95 1.155 1.396 0.1915 0.95 1.165 1.433 0.1979 0.95 1.175 1.473 0.2048 0.95 1.185 1.517 0.2123 0.95 1.195 1.566 0.2205 0.95 1.205 1.62 0.2295 0.95 1.215 1.679 0.2394 0.95 1.225 1.743 0.2502 0.95 1.235 1.81 0.2619 0.95 1.245 1.877 0.2744 0.95 1.255 1.939 0.287 0.95 1.265 1.989 0.2993 0.95 1.275 2.024 0.3103 0.95 1.285 2.039 0.3195 0.95 1.295 2.032 0.3261 0.95 1.305 2.005 0.33 0.95 1.315 1.963 0.3314 0.95 1.325 1.911 0.3308 0.95 1.335 1.854 0.3287 0.95 1.345 1.798 0.3261 0.95 1.355 1.748 0.3242 0.95 1.365 1.708 0.3241 0.95 1.375 1.683 0.3274 0.95 1.385 1.676 0.3359 0.95 1.395 1.69 0.3512