	chao1	observed_species
PC.636	173.0	63.0
PC.635	332.5	91.0
PC.356	189.9375	83.0
PC.481	223.583333333	81.0
PC.354	176.8	64.0
PC.593	90.0	48.0
PC.355	127.0	62.0
PC.607	211.0	78.0
PC.634	146.0	64.0
