new_comparison = clean
.select('market', 'spend', 'leads', 'bgc', 'new_market_june')
.groupby('new_market_june')
.rollup({
spend: d => op.sum(d.spend),
leads: d => op.sum(d.leads),
bgc: d => op.sum(d.bgc)
})
.derive({
cpa: d => d.spend / d.leads,
cpbgc: d => d.spend / d.bgc
})
.objects()