condition	mean	min	max
0 h after light	17.7683	14.8039	20.7327
4 h after light	23.36395	20.6587	26.0692
8 h after light	11.148895	9.20519	13.0926
4 h after dark	5.751935	5.63207	5.8718
8 h after dark	23.33455	21.9055	24.7636
12 h after dark	29.8283	28.414	31.2426