condition mean min max 0 h after light 7.95252 6.83139 9.07365 2 h after light 1.0005975 0.422445 1.57875 4 h after light 0.719051 0.322052 1.11605 8 h after light 0.762765 0.641151 0.884379 12 h after light 7.548885 5.55801 9.53976 2 h after dark 15.9507 14.5351 17.3663 4 h after dark 8.681905 7.74155 9.62226 8 h after dark 9.637785000000001 8.13857 11.137 12 h after dark 6.986285 4.46744 9.50513