condition mean min max 4 h after light 3.232911 2.57976 3.825991 8 h after light 2.380485 1.4969379999999999 3.34361 12 h after light 1.710673 1.293139 2.395798 16 h after light 3.0754266666666665 2.599441 3.5248809999999997 4 h after dark 3.3716286666666666 2.404173 4.396802 8 h after dark 2.575428 1.483096 4.425402