求助Excel按时间内分类统计个数

H列做辅助列，H2公式：

=IF(LOOKUP(G2,$G$1:G1)=G2,--TEXT(C2-LOOKUP(G2,$G$1:G1,$C$1:C1),"[m]"),100)

下拉至数据末行，统计公式：=COUNTIF(H:H,">"&90)