Leotokurtic: kurtosis>3

Mesokurtic: kurtosis=3

Platyk: kurtosis<3

From wiki: http://en.wikipedia.org/wiki/Kurtosis

- D: Laplace distribution, also known as the double exponential distribution, red curve (two straight lines in the log-scale plot), excess kurtosis = 3

- S: hyperbolic secant distribution, orange curve, excess kurtosis = 2

- L: logistic distribution, green curve, excess kurtosis = 1.2

- N: normal distribution, black curve (inverted parabola in the log-scale plot), excess kurtosis = 0
- C: raised cosine distribution, cyan curve, excess kurtosis = −0.593762…

- W: Wigner semicircle distribution, blue curve, excess kurtosis = −1

- U: uniform distribution, magenta curve (shown for clarity as a rectangle in both images), excess kurtosis = −1.2.

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