mongos> sh.balancerCollectionStatus('feature_fp_autoML.20230302')
{
        "balancerCompliant" : false,
        "firstComplianceViolation" : "chunksImbalance",
        "ok" : 1,
        "$clusterTime" : {
                "clusterTime" : Timestamp(1678105284, 676),
                "signature" : {
                        "hash" : BinData(0,"u04WVJEJT9SIJSc/VwOK8pOWlsQ="),
                        "keyId" : NumberLong("7162410084125900801")
                }
        },
        "operationTime" : Timestamp(1678105284, 635)

}

mongos>mongos> db
feature_fp_autoML

mongos> db.getCollection('20230302').getShardDistribution()

Shard ShardB at ShardB
 data : 771.97MiB docs : 5033137 chunks : 12
 estimated data per chunk : 64.33MiB
 estimated docs per chunk : 419428

Shard ShardA at ShardA/
 data : 48.42GiB docs : 323353923 chunks : 759
 estimated data per chunk : 65.32MiB
 estimated docs per chunk : 426026

Totals
 data : 49.17GiB docs : 328387060 chunks : 771
 Shard ShardB contains 1.53% data, 1.53% docs in cluster, avg obj size on shard : 160B
 Shard ShardA contains 98.46% data, 98.46% docs in cluster, avg obj size on shard : 160B

mongos>  sh.balancerCollectionStatus('feature_fp_autoML.20171126')
{
        "balancerCompliant" : true,
        "ok" : 1,
        "$clusterTime" : {
                "clusterTime" : Timestamp(1678105344, 1114),
                "signature" : {
                        "hash" : BinData(0,"Jm2qMWJt6kiBfzErHjbJbU8+RdE="),
                        "keyId" : NumberLong("7162410084125900801")
                }
        },
        "operationTime" : Timestamp(1678105344, 1)
}

mongos> db.getCollection('20171126').getShardDistribution()

Shard ShardB at ShardB/
 data : 576.05MiB docs : 4080916 chunks : 9
 estimated data per chunk : 64MiB
 estimated docs per chunk : 453435

Shard ShardA at ShardA/
 data : 526.43MiB docs : 3728084 chunks : 9
 estimated data per chunk : 58.49MiB
 estimated docs per chunk : 414231

Totals
 data : 1.07GiB docs : 7809000 chunks : 18
 Shard ShardB contains 52.25% data, 52.25% docs in cluster, avg obj size on shard : 148B
 Shard ShardA contains 47.74% data, 47.74% docs in cluster, avg obj size on shard : 148B

mongos>  db.getCollection('20220929').getShardDistribution()

Shard ShardB at ShardB/
 data : 3.52GiB docs : 25565071 chunks : 56
 estimated data per chunk : 64.37MiB
 estimated docs per chunk : 456519

Shard ShardA at ShardA/
 data : 16.03GiB docs : 116634260 chunks : 252
 estimated data per chunk : 65.17MiB
 estimated docs per chunk : 462834

Totals
 data : 19.56GiB docs : 142199331 chunks : 308
 Shard ShardB contains 17.99% data, 17.97% docs in cluster, avg obj size on shard : 147B
 Shard ShardA contains 82% data, 82.02% docs in cluster, avg obj size on shard : 147B