condition mean min max 4 h after light 5.8042533333333335 5.64916 5.91507 8 h after light 6.13361 5.74445 6.33271 12 h after light 6.232403333333333 5.92594 6.4195 4 h after dark 6.30697 6.00945 6.583289999999999 8 h after dark 6.32714 5.9928300000000005 6.747669999999999 12 h after dark 6.50635 6.4101 6.64348