One column is filled out for each market day. A number of values are posted to provide a fairly complete picture of the day's activity. Posting the closing values for the major indices, NYSE and NASDAQ counts of advancing issues, declining issues, new highs, new lows, plus exchange volumes, provides a reasonably clear picture of the day's market results / internals. Also recorded are several volatility indices, the CBOE combined equity/index put/call ratio, the Rydex Nova/Ursa ratio, the Treasury 10 year yield, the US Dollar Index, the CRB Index, plus ending prices for several key commodities.  Keeping up with these numbers on a daily basis over time will add to an investor's perspective on the market and readings which affect the market.