condition mean min max 4 h after light 3.5571546666666665 3.158417 4.211926999999999 8 h after light 4.531996 2.6301229999999998 8.247232 12 h after light 2.661144333333333 1.48366 4.782353 16 h after light 3.4525470000000005 2.676848 4.666091000000001 4 h after dark 6.607790333333334 5.197325 8.994488 8 h after dark 4.435160333333333 3.6716260000000003 5.693084