condition mean min max 0 h after light 7.344625000000001 6.96982 7.71943 2 h after light 9.626729999999998 8.52686 10.7266 4 h after light 13.889199999999999 11.8384 15.94 8 h after light 7.6352899999999995 7.20062 8.06996 12 h after light 17.01385 14.1305 19.8972 2 h after dark 15.10515 14.7409 15.4694 4 h after dark 12.3499 11.1774 13.5224 8 h after dark 11.97395 11.3442 12.6037 12 h after dark 8.780315 7.97427 9.58636