I have the following problem: I have a DataFrame df which looks like this: eqpid recpid queuetime trackintime trackouttime 3723
python-3.1
load-balancing
jquery-ui-multiselect
becomefirstresponder
appendto
memberpress
service-level-agreement
daemon
midi.js
objection.js
custom-cell
bit-manipulation
propertydescriptor
socat
deflate
calibration
taskcompletionsource
coldfusion
nonfactors-mvc-grid
nsarraycontroller
variable-names
dispatchgroup
sonic
jasmine-spec-reporter
glimpse
rgoogleanalytics
fresco
shoelace
monero
fnv