hi,
can somebody explain what it means by "Over" or "Under" level? See below. thanks,
@jzhao
It's a part of Tokyo Stock Exchange FLEX STANDARD Level 2 Content.
TSE FLEX STANDARD provides only the 10 best quote prices/sizes and prices Over/Under the best 10 are given as accumulated quote sizes.
These keys indicate that the map entry is for quotes outside of best 10.