condition mean min max 4 h after light 7.325575 6.32545 8.3257 8 h after light 5.777374999999999 5.68056 5.87419 12 h after light 5.9383 5.73851 6.13809 4 h after dark 7.457246666666667 6.04917 8.30915 8 h after dark 8.730583333333334 8.58814 8.88936 12 h after dark 7.700153333333333 7.23624 8.20249