Definitions containing the term level at/against

What does level at/against mean?

ATT	Computing » File Extensions
ZTQ	Business » Stock Exchange
AWE	Business » NYSE Symbols
LVL	Academic & Science » Physics
SLA	Business » General
ATE	Medical » Laboratory
SLA	Computing » Networking
VAW	Community » Law
MLM	Business » General
SLA	Governmental » US Government
SLA	Computing » Telecom
SLA	Governmental » Police
UNC	Academic & Science » Universities
LL	Miscellaneous » Unclassified
LOS	Governmental » Transportation
ATM	Internet » Chat
ATM	Computing » Texting
UNC	Medical » Human Genome
MWE	Community » Law
SAHM	Community » Housing
FWHM	Academic & Science » Electronics
MWE	Business » Firms
TLD	Computing » General
UAB	Academic & Science » Universities
TLD	Internet » Domain Names