I have the following problem: I have a DataFrame df which looks like this: eqpid recpid queuetime trackintime trackouttime 3723
symfony-kernel
fluent
logback
telnet
browser-extension
glm
restcomm
xcode9
bootstrapvalidator
hmvc
changestream
openssl-engine
cups
azul-zulu
fuel
a-star
qtoolbox
fakeredis
ssrs-2017
unity-remote
oozie
primefaces-datatable
selectedindex
typesafe
css-parsing
cloud-integration
dgl
twilio-python
formvalidation.io
contiguous