	observed_species	chao1	PD_whole_tree
PC.636	47.0	269.0	5.49572
PC.635	65.0	195.666666667	6.08064
PC.356	59.0	153.6	4.03369
PC.481	63.0	267.166666667	5.41234
PC.354	49.0	197.2	4.26633
PC.593	36.0	74.5	4.22209
PC.355	48.0	118.125	3.84474
PC.607	60.0	207.857142857	6.14903
PC.634	44.0	91.25	5.19847