condition mean min max 4 h after light 0.889675 0.760803 1.02856 8 h after light 0.934995 0.189565 1.4147 12 h after light 1.3699716666666666 0.836335 1.90994 4 h after dark 1.55822 1.31224 1.84469 8 h after dark 1.35181 1.06223 1.74539 12 h after dark 0.9277340000000001 0.790278 1.05891