I'm making a user based questionaire. I need them to input 4 different
variables and based on those variables I need a single number to be picked
out of an index. I'm not exactly sure how the code would look. Here is an
example of what I am trying to do. The city, sunny or cloudy, month and time
(1,2,3) are the variables.

1 2 3
Toronto Sunny Jan 4.5 5.7 6.7
Toronto Cloudy Jan 34 3 12
Ottawa Sunny Jan 23.5 45 14
Ottawa Cloudy Jan 32 4.8 54