condition mean min max 4 h after light 3970.201714 3666.80352 4273.599908 8 h after light 3685.8796455 3475.770518 3895.988773 12 h after light 4126.7320565 3821.847441 4431.616672 4 h after dark 3431.8156755 2553.565046 4310.066305 8 h after dark 2769.652893 1717.458345 3821.847441 12 h after dark 4515.399244 4515.399244 4515.399244