condition mean min max 3 h after light 3.27243 3.15784 3.39963 6 h after light 1.99331 1.40774 2.4917 9 h after light 3.05147 2.19692 3.83501 12 h after light 6.870480000000001 5.56188 7.75405 3 h after dark 7.358596666666666 7.11572 7.76052 6 h after dark 3.3737433333333335 3.17198 3.53602 9 h after dark 2.37412 2.20299 2.64532 12 h after dark 2.1119399999999997 2.03958 2.15114