I have a field with total consumption and i need to spread the numbers into 4 different tiers.

[SatishSadanandam]

I have a field which shows the total consumption like 159. I need to spread the numbers into 4 tiers

For EG:

Tier1: 10

Tier2: 30

Tier3: 60

Tier4: 59 (remaining numbers from Tier3)

Another EG:

Total Cons: 48

Tier1: 10

Tier2: 30

Tier3: 8

Tier4: 0

Any help how i can do this in ArcMap using VB script or Python?

[DarrenWiens2]

See the example on using logic with Python:

Calculate Field examples—Help | ArcGIS for Desktop