condition mean min max 4 h after light 5.737665 5.6569 5.81843 8 h after light 4.013565 3.5557 4.47143 12 h after light 5.389105 4.98318 5.79503 4 h after dark 7.43357 7.02119 7.84595 8 h after dark 5.665789999999999 5.09748 6.2341 12 h after dark 6.8603000000000005 6.68203 7.03857