Table 8.

Ranking of attributes based on Correlation Coefficient.

Rank	Bipolar-Disorder	Merit	Melancholia-Disorder	Merit
1	Temperature	0.526	Season	243.18
2	Atmospheric Pressure	0.421	Ozone	182.8
3	Season	0.38	Carbon-monoxide	155.3
4	Ozone	0.31	Temperature	102.6
5	Nitrogen-dioxide	0.29	Nitrogen-dioxide	94.4
6	Carbon-monoxide	0.264	Atmospheric Pressure	33.6
7	Snow	0.204	Fog	15.2
8	Humidity	0.179	Snow	10.2
9	Fog	0.13	Storm	6.5
10	Rain	0.125	Humidity	2.43
11	Visibility	0.122	Visibility	1.7
12	Storm	0.105	Wind speed	0.008
13	Wind speed	0.07	Rain	0.003