condition mean min max 4 h after light 2.651426 2.55003 2.761213 8 h after light 1.9805463333333333 1.5110370000000002 2.302679 12 h after light 2.975948333333333 1.2635450000000001 3.912487 16 h after light 3.549459333333333 3.181549 4.107641 4 h after dark 3.498991 2.607996 4.332053 8 h after dark 1.8834703333333334 1.424022 2.698222