condition mean min max 4 h after light 163.866672 162.616672 165.116672 8 h after light 144.57601449999999 135.858468 153.293561 12 h after light 145.6316955 136.645979 154.617412 4 h after dark 182.177592 144.387781 219.967403 8 h after dark 141.9731395 141.113776 142.832503 12 h after dark 185.544618 185.544618 185.544618