condition	mean	min	max
4 h after light	7.51776	7.332789999999999	7.63103
8 h after light	7.685906666666667	7.57225	7.83305
12 h after light	7.50584	7.398969999999999	7.67813
4 h after dark	7.5255399999999995	7.4085	7.687069999999999
8 h after dark	7.648346666666667	7.6200399999999995	7.664560000000001
12 h after dark	7.820066666666667	7.685860000000001	7.92276