Subjectively, Steidlmayer recognized a few behavior patterns or 'Day Types' in the early part of the day (tied to the Initial Balance), defining 3 types (CBOTMPG1, Pg 12) and later, 4 (CBOTMP2, PG 4, 12). Each type developed certain characteristics, telling which sort of trader is in control (short term traders, longer traders, etc.). Mind Over Markets lists 9 day types (9).