condition mean min max 4 h after light 3.5906493333333334 3.530126 3.711332 8 h after light 3.1150903333333333 2.824711 3.467207 12 h after light 3.4112649999999998 1.532917 6.1020389999999995 16 h after light 5.0882146666666666 4.115939 5.594758000000001 4 h after dark 4.688437333333333 3.4060330000000003 5.678662999999999 8 h after dark 2.4685286666666664 1.870018 3.5710059999999997