condition mean min max 4 h after light 4.69603 3.43216 5.57156 8 h after light 5.22436 1.6004 8.24356 12 h after light 4.2998666666666665 2.91253 6.24222 4 h after dark 6.745913333333333 4.96586 8.19958 8 h after dark 6.8924 4.39003 9.34416 12 h after dark 7.027023333333333 6.04662 7.64441