condition mean min max 4 h after light 291.5125305 287.489654 295.535407 8 h after light 573.5721945 399.691199 747.45319 12 h after light 418.3665965 362.599358 474.133835 4 h after dark 632.5291145 509.168252 755.889977 8 h after dark 760.877974 432.248506 1089.507442 12 h after dark 125.903806 125.903806 125.903806