condition mean min max 4 h after light 2.245285 2.0228 2.46777 8 h after light 2.0423400000000003 1.94041 2.14427 12 h after light 2.37681 2.34713 2.40649 4 h after dark 2.84997 2.76138 2.93856 8 h after dark 2.3848000000000003 2.27394 2.49566 12 h after dark 2.50572 2.44171 2.56973