Rise to Fall Time ratio for type III events, from 5 observations published by Greenman Ozmar and Reeve

Let us consider the maximum rise and fall slopes:

MaxSlopeRise[kelvin/second] = ScaleTime[pixel/second]/ScaleKelvin[pixel/kelvin]*tangent(SlopeAngleRise)

MaxSlopeFall[kelvin/second] = ScaleTime[pixel/second]/ScaleKelvin[pixel/kelvin]*tangent(SlopeAngleFall)

RiseToFallRatio = tangent(SlopeAngleRise)/tangent(SlopeAngleFall)

Example:
 

Summary of recent solar type III rise to fall rate ratios

yymmdd hhmm UTC, Author, rise to fall rate ratio

130524 1516 Greenman  4.3
130520 1603 Reeve    10.5
130518 1621 Reeve     7.9
130512 1824 Ozmar     2.8
130512 1824 Reeve     2.5

Histogram:

 2 xx
 3
 4 x
 5
 6
 7 x
 8
 9
10 x

Many thanks to the Authors.