最多方向 依月份 (13098)

F2:F3{=INDEX(C:C,RIGHT(MAX(COUNTIFS(B:B,B$2:B$21,C:C,C$2:C$21)*(B$2:B$21=E2)/1%+ROW($2:$21)),2))

I2:L3=COUNTIFS($B:$B,$H2,$C:$C,I$1)