condition	mean	min	max
4 h after light	8.75821	8.03318	9.48324
8 h after light	17.7977	16.2692	19.3262
12 h after light	40.685900000000004	39.7944	41.5774
4 h after dark	26.426	25.402	28.3494
8 h after dark	22.73	22.2081	23.6791
12 h after dark	16.278466666666667	15.8242	16.5427