MongoDB Enterprise mongos> db.C_RETRY.getShardDistribution()

Shard rs-qa-c_1 at rs-qa-c_1/dc615355.domain:27017,dc615356.domain:27017
 data : 164.21GiB docs : 5429605 chunks : 7998
 estimated data per chunk : 21.02MiB
 estimated docs per chunk : 678

Shard rs-qa-c_0 at rs-qa-c_0/dc615353.domain:27017,dc615354.domain:27017
 data : 228.28GiB docs : 5973556 chunks : 8034
 estimated data per chunk : 29.09MiB
 estimated docs per chunk : 743

Shard rs-qa-c_3 at rs-qa-c_3/dc1008002.domain:27017,dc1008003.domain:27017
 data : 541.12MiB docs : 17450 chunks : 7998
 estimated data per chunk : 69KiB
 estimated docs per chunk : 2

Shard rs-qa-c_2 at rs-qa-c_2/dc616512.domain:27017,dc616513.domain:27017
 data : 171.55GiB docs : 5892154 chunks : 7998
 estimated data per chunk : 21.96MiB
 estimated docs per chunk : 736

Totals
 data : 564.58GiB docs : 17312765 chunks : 32028
 Shard rs-qa-c_1 contains 29.08% data, 31.36% docs in cluster, avg obj size on shard : 31KiB
 Shard rs-qa-c_0 contains 40.43% data, 34.5% docs in cluster, avg obj size on shard : 40KiB
 Shard rs-qa-c_3 contains 0.09% data, 0.1% docs in cluster, avg obj size on shard : 31KiB
 Shard rs-qa-c_2 contains 30.38% data, 34.03% docs in cluster, avg obj size on shard : 30KiB