- some words about statistics

DESIGN.asciidoc

@@ -40,10 +40,33 @@ The tool used the following files:
 * ${HOME}/.cache/validate_workflows/statistics.cnt
 * /var/lock/validate_workflows.lock
 
+== Statistics
+
+we need following criteria:
+
+* last_delta_t
+* avg_delta_t
+* stddev_delta_t
+* avg_duration
+* stddev_duration
+* cnt_valid_$filetype
+* cnt_invalid_$filetype
+* cnt_valid_workflow
+* cnt_invalid_workflow
+* ratio_valid_$filetype
+* ratio_invalid_$filetype
+* ratio_valid_$filetype by date
+* ratio_invalid_$filetype by date
+
+Could result in csv table for each file scan
+
+date | cnt_valid | cnt_invalid | duration | filetype | workflow | stage
+
 == Ideas
 
 * env variables for profiles
-* 
+
+