	observed_species	chao1	PD_whole_tree
PC.636	50.0	173.5	5.63421
PC.635	71.0	413.2	6.73062
PC.356	56.0	130.1	4.2679
PC.481	61.0	215.428571429	5.31791
PC.354	48.0	233.25	4.58498
PC.593	37.0	67.0	4.20505
PC.355	48.0	106.125	3.92856
PC.607	58.0	187.0	6.19946
PC.634	48.0	110.0	5.33317