condition mean min max 4 h after light 5.3142949999999995 4.87766 5.75093 8 h after light 4.751965 4.69511 4.80882 12 h after light 3.2743900000000004 2.59967 3.94911 4 h after dark 4.94411 4.73631 5.1961 8 h after dark 6.147686666666667 5.82167 6.55502 12 h after dark 5.285803333333333 5.2077 5.38958