condition mean min max 4 h after light 535.561328 413.762417 657.360239 8 h after light 387.28907649999996 378.908197 395.669956 12 h after light 393.5114785 392.000894 395.022063 4 h after dark 318.662301 284.246391 353.078211 8 h after dark 377.327892 315.127167 439.528617 12 h after dark 473.253965 473.253965 473.253965