Plus 24 or minus 24 tend to be an extreme readings. This should technically be known as the ARMS index after its creator, Dick Arms. We watch the direction this index is moving to indicate the overall trend of the market. If the Trin goes from .80 to 1.00, it would indicate that selling is coming into the market. This is a Volatility Index that represent the implied premium level on the at the money OEX puts and calls.
Most data feeds transmit the above indicators.
However, different data feeds may use different symbols. If you have any questions regarding symbol code, please contact your data vendor. Market breadth is monitored by looking at the number of advancing issues minus the number of declining issues. Put call data is provided by the individual exchanges. We look at the equity only put call ratios, in addition to the put call ratios which include index option volume.