condition mean min max 0 h after light 15.3541 13.1372 17.571 2 h after light 7.56459 6.64034 8.48884 4 h after light 7.458095 7.22315 7.69304 8 h after light 7.064019999999999 6.96266 7.16538 12 h after light 8.204975000000001 7.71101 8.69894 2 h after dark 8.955494999999999 8.48969 9.4213 4 h after dark 11.450849999999999 10.9321 11.9696 8 h after dark 16.4447 15.8638 17.0256 12 h after dark 15.751550000000002 14.6303 16.8728