Solution

24620

First name
Randolph Carter
School
Miskatonic University
Age
18

The standard deviation is low (less than 3) for A,C,F but it is all over the map for B,D,E, leading me to conclude A,C,F is the weather data, and B,D,E is the weight data.

This makes sense - yes weather varies, but not so much as a human behavior like weight gain.

Standard Deviations are (according to excel):

A: 2.545584412
B: 4.371655533
C: 1.874765065
D: 18.96460387
E: 8.40042856
F: 0.61968267

So you note how A, C, F have relatively low standard deviations while B, D, E have high ones.