condition mean min max 4 h after light 2.373205 0.823195 3.82757 8 h after light 1.8040576666666668 0.311723 3.3206 12 h after light 2.0412 1.2014 2.99811 4 h after dark 3.31194 2.55366 3.7205 8 h after dark 2.24248 1.11972 3.73559 12 h after dark 2.535343333333333 2.02234 3.54813