1	Device
     2	r_s
     3	rkB_s
     4	rrqm_s
     5	%rrqm
     6	r_await
     7	rareq-sz
     8	w_s
     9	wkB_s
    10	wrqm_s
    11	%wrqm
    12	w_await
    13	wareq-sz
    14	d_s
    15	dkB_s
    16	drqm_s
    17	%drqm
    18	d_await
    19	dareq-sz
    20	f_s
    21	f_await
    22	aqu-sz
    23	%util