pcw	mean_expr	median_expr	pct_expressing	n_cells	n_expressing
pcw16	0.501046576474998	0	39.7615237701956	19373	7703
pcw20	0.547899195914046	0	45.3489297366118	12567	5699
pcw21	0.452763515602055	0	37.4691407183244	12557	4705
pcw24	0.500783463209769	0	41.9789095804353	13371	5613