Does anyone know where I can find information about the MetricsPort output?

In particular, hs introduction point and rendezvous point circ build time bucket. What do the numbers represent le="1000.00" - le="6000.00"

suggested-effort value Do I understand correctly that the value goes from 0-1000? https://spec.torproject.org/hspow-spec/common-protocol.html#client-limits

# HELP tor_hs_intro_circ_build_time The introduction circuit build time in milliseconds # TYPE tor_hs_intro_circ_build_time histogram tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="1000.00"} 128 tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="5000.00"} 205 tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="10000.00"} 205 tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="30000.00"} 205 tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="60000.00"} 205 tor_hs_intro_circ_build_time_bucket{onion="somerandomonionaddress",le="+Inf"} 205 tor_hs_intro_circ_build_time_sum{onion="somerandomonionaddress"} 210297 tor_hs_intro_circ_build_time_count{onion="somerandomonionaddress"} 205

# HELP tor_hs_rend_circ_build_time The rendezvous circuit build time in milliseconds # TYPE tor_hs_rend_circ_build_time histogram tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="1000.00"} 14275 tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="5000.00"} 24060 tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="10000.00"} 24095 tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="30000.00"} 24096 tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="60000.00"} 24096 tor_hs_rend_circ_build_time_bucket{onion="somerandomonionaddress",le="+Inf"} 24096 tor_hs_rend_circ_build_time_sum{onion="somerandomonionaddress"} 25308501 tor_hs_rend_circ_build_time_count{onion="somerandomonionaddress"} 24096

# HELP tor_hs_pow_suggested_effort Suggested effort for requests with a proof of work client puzzle # TYPE tor_hs_pow_suggested_effort gauge tor_hs_pow_suggested_effort{onion="somerandomonionaddress"} 1