Hyetograph time-block aggregation calculator

Calculate blocks [start minute,depth mm,intensity mm/hour] JSON and total rainfall with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use blocks [start minute,depth mm,intensity mm/hour] JSON and total rainfall to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Rain sample timestamps from origin (minutes)
0,10,20,30,40,50
Rain depth assigned to timestamp (mm)
1,2,3,1,0,2
Output block width (minutes)
30
Blocks [start minute,depth mm,intensity mm/hour] JSON
[[0,6,12],[30,3,6]]
Total rainfall (mm)
9

Try another scenario

Rain sample timestamps from origin (minutes)
[0, 10, 20, 27, 40, 50]
Rain depth assigned to timestamp (mm)
[1, 2, 3, 1, 0, 2]
Output block width (minutes)
30
Blocks [start minute,depth mm,intensity mm/hour] JSON
[[0,7,14],[30,2,4]]
Total rainfall (mm)
9
Calculation method

Calculation method

Blocks [start minute,depth mm,intensity mm/hour] JSON

Bin timestamp-assigned rainfall into half-open fixed blocks starting at zero; boundary samples enter the next block.

Total rainfall (mm)

Bin timestamp-assigned rainfall into half-open fixed blocks starting at zero; boundary samples enter the next block.

Symbols and units
a
Rain sample timestamps from origin (minutes)
b
Rain depth assigned to timestamp (mm)
c
Output block width (minutes)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • User-supplied measurements and assumptions; Bin timestamp-assigned rainfall into half-open fixed blocks starting at zero; boundary samples enter the next block. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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