condition mean min max 4 h after light 6.918895 6.00824 7.82955 8 h after light 6.810420000000001 6.59448 7.02636 12 h after light 6.603035 6.36473 6.84134 4 h after dark 8.95823 6.69436 11.2221 8 h after dark 5.91333 5.61408 6.21258 12 h after dark 6.39015 6.24632 6.53398