Depth C13 O18 648 1.064 3.266 656 0.968 3.337 672 0.969 3.207 680 1.212 3.208 688 1.185 3.193 696 0.976 3.107 704 0.855 2.654 722 0.792 2.623 728 1.113 2.526 737 0.932 2.447 745 1.09 2.569 760 1.017 2.509 768 1.143 2.597 792 1.057 2.463 800 0.76 2.585 832 0.871 2.564 840 0.874 2.458 848 0.852 2.48 856 0.676 2.596 864 0.571 2.399 872 0.367 2.46 872 0.623 2.341 872 0.53 2.605 880 0.745 4.086 880 0.789 4.205 880 -0.004 2.646 888 0.093 2.704 888 0.363 2.622 888 0.631 3.717 895.5 0.613 3.155 895.5 0.572 3.674 895.5 0.487 3.597 904 0.502 3.754 912 0.78 4.171 920 1.044 4.103 928 0.953 4.215 944 1.162 4.282 952 0.948 4.295