condition mean min max 4 h after light 1.6902300000000001 1.53216 1.8483 8 h after light 2.141105 1.97155 2.31066 12 h after light 2.020565 1.68865 2.35248 4 h after dark 2.4333966666666664 2.15813 2.8156 8 h after dark 2.3745133333333333 2.17827 2.54105 12 h after dark 2.3457933333333334 2.00495 2.97814