$ openreviews -p projects/nova.json 
> Projects: [u'nova']
--> Total Open Reviews: 669
--> Waiting on Submitter: 337
--> Waiting on Reviewer: 332
--> Stats since the latest revision: 
----> Average wait time: 112 days, 20 hours, 24 minutes
----> 1st quartile wait time: 4 days, 12 hours, 54 minutes
----> Median wait time: 42 days, 1 hours, 51 minutes
----> 3rd quartile wait time: 155 days, 3 hours, 14 minutes
----> Number waiting more than 7 days: 247
--> Stats since the last revision without -1 or -2 : 
----> Average wait time: 126 days, 22 hours, 28 minutes
----> 1st quartile wait time: 10 days, 4 hours, 30 minutes
----> Median wait time: 53 days, 23 hours, 53 minutes
----> 3rd quartile wait time: 176 days, 18 hours, 4 minutes
--> Stats since the first revision (total age): 
----> Average wait time: 198 days, 13 hours, 43 minutes
----> 1st quartile wait time: 28 days, 17 hours, 17 minutes
----> Median wait time: 108 days, 21 hours, 9 minutes
----> 3rd quartile wait time: 330 days, 9 hours, 50 minutes
--> Longest waiting reviews (based on latest revision): 
----> 850 days, 14 hours, 52 minutes https://review.openstack.org/286390 (Use check_string_length from oslo_utils)
----> 654 days, 1 hours, 24 minutes https://review.openstack.org/375623 (Clean up instance on target node if evacuate fails)
----> 632 days, 5 hours, 41 minutes https://review.openstack.org/382915 (Added CLI args for nova-policy check command)
----> 625 days, 22 hours, 55 minutes https://review.openstack.org/343943 (Empty machine_id file causes get_sysinfo_serial_auto to fail.)
----> 601 days, 21 hours, 11 minutes https://review.openstack.org/390705 (Delete checking a bool opt of None condition)
--> Longest waiting reviews (based on oldest rev without -1 or -2): 
----> 850 days, 14 hours, 52 minutes https://review.openstack.org/286390 (Use check_string_length from oslo_utils)
----> 769 days, 1 hours, 40 minutes https://review.openstack.org/325608 (VMware: use WithRetrieval in vm_util module)
----> 722 days, 11 hours, 5 minutes https://review.openstack.org/218639 (VMware: ensure volume is accessible by instance)
----> 720 days, 18 hours, 9 minutes https://review.openstack.org/343943 (Empty machine_id file causes get_sysinfo_serial_auto to fail.)
----> 654 days, 1 hours, 24 minutes https://review.openstack.org/375623 (Clean up instance on target node if evacuate fails)
--> Oldest reviews (time since first revision): 
----> 1309 days, 20 hours, 38 minutes https://review.openstack.org/141219 (Adds spec for instance live resize)
----> 1191 days, 10 hours, 29 minutes https://review.openstack.org/171984 (Fix invalid Image&block device mapping combination)
----> 1048 days, 9 hours, 57 minutes https://review.openstack.org/218639 (VMware: ensure volume is accessible by instance)
----> 864 days, 14 hours, 28 minutes https://review.openstack.org/286390 (Use check_string_length from oslo_utils)
----> 773 days, 11 hours, 2 minutes https://review.openstack.org/323250 (Ensure that periodic reclaim cleans DB deleted instances)