condition mean min max 0 h after light 1.66703 1.60224 1.73182 4 h after light 1.0130145 0.945169 1.08086 8 h after light 1.2522929999999999 0.959446 1.54514 4 h after dark 0.9963105000000001 0.745391 1.24723 8 h after dark 1.4394900000000002 1.2458 1.63318 12 h after dark 1.460925 1.15333 1.76852