diff --git a/README.md b/README.md
index f2e7a4f..74783a3 100644
--- a/README.md
+++ b/README.md
@@ -13,10 +13,10 @@ Hifiasm is an ultrafast haplotype-resolved de novo assembler based on PacBio Hif
 
 Hifiasm is a standalone and lightweight assembler, which does not need external libraries (except zlib). For large genomes, it can generate high-quality assembly in a few hours. Hifiasm has been tested on the following datasets:
 
-|Dataset         |GSize |    Cov |          Asm options |CPU time|Wall time|    RAM|unitig/contig N50|
-|:---------------|-----:|-------:|:---------------------|-------:|--------:|------:|----------------:|
-|[Human NA12878] |   3Gb|x28     |-k 40 -t 42 -r 2      |    200h|    5h32m|?114.1G|    93.5Kb/18.6Mb|
-|[Human HG002]   |   3Gb|x43     |-k 40 -t 42 -r 2      |   ?405h|  ?10h12m|?122.1G|       320kb/29Mb|
-|[Human CHM13]   |   3Gb|x27     |-k 40 -t 42 -r 2      |       ?|        ?|      ?|        NA/39.8Mb|
-|[Butterfly]     | 358Mb|x35     |-k 40 -t 42 -r 2 -z 20|   17.1h|      36m|  16.7G|         NA/7.5Mb|
+|Dataset         |GSize |  Cov |          Asm options |CPU time|Wall time|  RAM|unitig/contig N50|
+|:---------------|-----:|-----:|:---------------------|-------:|--------:|----:|----------------:|
+|[Human NA12878] |   3Gb|x28   |-k 40 -t 42 -r 2      |    200h|    5h32m|?114G|    93.5Kb/18.6Mb|
+|[Human HG002]   |   3Gb|x43   |-k 40 -t 42 -r 2      |   ?405h|  ?10h12m|?122G|       320kb/29Mb|
+|[Human CHM13]   |   3Gb|x27   |-k 40 -t 42 -r 2      |       ?|        ?|    ?|       NA/39.8Mb|
+|[Butterfly]     | 358Mb|x35   |-k 40 -t 42 -r 2 -z 20|   17.1h|      36m|  16G|         NA/7.5Mb|