condition mean min max 4 h after light 3.1230783333333334 3.001522 3.2550529999999998 8 h after light 2.540538333333333 2.450189 2.635873 12 h after light 1.4517753333333334 1.3004799999999999 1.595909 16 h after light 3.010376 2.4804939999999998 3.5997220000000003 4 h after dark 2.5222826666666665 2.246342 2.916399 8 h after dark 1.572261 1.550707 1.610085