digraph G {
 rankdir=TB
 node [shape=box, fontsize=9, height=0.1, width=0.05 ]
 edge [arrowsize=0.5, len=0.1]
"Thermostat\n"->"Time\nTemperature\n"
"Time\nTemperature\n"->"Time\n"
"Time\nTemperature\n"->"Temperature\n"
"Time\n"->"Date\nHour\nseason\noperation\n"
"Date\nHour\nseason\noperation\n"->"Date\nHour\n"
"Date\nHour\nseason\noperation\n"->"season\noperation\n"
"season\noperation\n"->"season\n"
"season\noperation\n"->"operation\n"
"Date\nHour\n"->"Date\n"
"Date\nHour\n"->"Hour\n"
"Date\n"->"day\nmonth\ntoday\n"
"day\nmonth\ntoday\n"->"month\n"
"day\nmonth\ntoday\n"->"day\ntoday\n"
"day\ntoday\n"->"day\n"
"day\ntoday\n"->"today\n"
"Hour\n"->"hour\n"
"Temperature\n"->"thermostat_settings\n"
"month\n"->"season\n" [weight=2.0, color=blue]
"day\n"->"today\n" [weight=2.0, color=blue]
"today\n"->"operation\n" [weight=2.0, color=blue]
"hour\n"->"operation\n" [weight=2.0, color=blue]
"season\n"->"thermostat_settings\n" [weight=2.0, color=blue]
"operation\n"->"thermostat_settings\n" [weight=2.0, color=blue]
}