d2ece5a3_breaking_to_patch_missing_data__Patching
[Missing value] Some time intervals between 2 and 11 are null with 6 or more non null time intervals [Rule] 1.6 [Patching] 
Time interval is patched with the average of interval – 1 and interval + 1 subject to these not being null. For example if time interval 5 was null this would be patched with an average of time interval 4 and time interval 6 n.b this rule can happen up to a maximum of 5 times.
how to apply business rules with out breaking to patch missing data
Patching