condition	mean	min	max
4 h after light	7.6977166666666665	7.608969999999999	7.779160000000001
8 h after light	7.752443333333334	7.719110000000001	7.794060000000001
12 h after light	7.550913333333333	7.44925	7.658239999999999
4 h after dark	7.736293333333333	7.6121300000000005	7.886089999999999
8 h after dark	7.62999	7.55174	7.74147
12 h after dark	7.64545	7.55015	7.740469999999999