anchor.diff:                        Now - ModTime(Name) =< Window],
       Blobs = [element(2, file:read_file(filename:join(Dir, Name))) ||
                           Name <- ToScan],
  -    compute_quantiles(Blobs).
  -
  -compute_quantiles(Blobs) ->
  +    compute_quantiles(Blobs, HistMin, HistMax, HistBins).
  +
  +compute_quantiles(Blobs, HistMin, HistMax, HistBins) ->
       {H, Count} = compute_quantiles(
  -                   Blobs, basho_stats_histogram:new(0, 5000000, 20000), 0),
  +                   Blobs, basho_stats_histogram:new(HistMin, HistMax, HistBins), 0),
       {_Min, Mean, Max, _Var, _SDev} = basho_stats_histogram:summary_stats(H),
       P50 = basho_stats_histogram:quantile(0.50, H),
       P95 = basho_stats_histogram:quantile(0.95, H),
  
positive.code: sync(_S) ->
      todo.
  
  mean_and_nines(#slide{dir=Dir, window = Window}, _Moment) ->
      Now = moment(),
      Names = filelib:wildcard("*", Dir),
      ModTime = fun(Name) ->
  
negative.code: -export([sum/1, sum/2, sum/3]).
  -export([mean/1, mean/2, mean/3]).
  -export([nines/1, nines/2, nines/3]).
  -export([mean_and_nines/2, mean_and_nines/5]).
  -export([private_dir/0, sync/1]).
  
  -include_lib("kernel/include/file.hrl").
  