condition mean min max 4 h after light 5.859975333333334 3.114332 9.066342 8 h after light 2.2430570000000003 1.5212700000000001 2.6413450000000003 12 h after light 2.134706333333333 1.662679 2.4857139999999998 16 h after light 3.051301 2.71191 3.467032 4 h after dark 228.1774 197.2327 264.0745 8 h after dark 2.9419386666666667 1.633753 3.7031089999999995