d2ece5a3_breaking_to_patch_missing_data__Patching
[Missing value] Two consecutive time intervals (excluding both 1 & 2 or both 11&12) are null e.g. time interval 3 and 4 are null [Rule] 1.4 [Patching] 
Average the preceding and succeeding time intervals of the missing 2 values. If time intervals 3 and 4 are null then these become the average of time intervals 2 and 5.
how to apply business rules with out breaking to patch missing data
Patching