I have the following problem: I have a DataFrame df which looks like this: eqpid recpid queuetime trackintime trackouttime 3723
virtual-network-interface
weaving
ringcentral-webhooks
viewwillappear
httpresponse
daap
cantera
giphy-api
rundll32
flutter-ios
diagnostics
fink
pyephem
java-text-blocks
activecollab
ethercat
.net-4.5
mathematical-notation
streaminghttpresponse
voila
observable
azure-application-proxy
struts-tags
file-uri
commercial-application
kframework
haskell-prelude
django-admin
iis-7
windowsdomainaccount