I have the following problem: I have a DataFrame df which looks like this: eqpid recpid queuetime trackintime trackouttime 3723
typeahead
viewpage
database-scan
ones-complement
qtdatavisualization
xip-file
sql-agent
bspline
jsmpeg
decision-tree
cumulative-line-chart
switching
time-tracking
moto
datacontract
.net-core-service-worker
task
screensaver
vimeo-api
multi-page-application
nsnetservice
jsonresponse
visual-studio-debugging
helmfile
rjson
urlopen
irrlicht
aspose.html
xcode9.4
paypal-adaptive-payments