condition mean min max 4 h after light 0.635861 0.612241 0.659481 8 h after light 0.3347275 0.311232 0.358223 12 h after light 0.8232165 0.808466 0.837967 4 h after dark 1.138485 0.619265 1.42295 8 h after dark 0.880796 0.740064 0.964683 12 h after dark 0.6519913333333334 0.587775 0.743598