condition mean min max 4 h after light 213.624278 204.904944 222.343612 8 h after light 203.7930375 201.277095 206.30898 12 h after light 207.200374 206.30898 208.091768 4 h after dark 194.113117 181.917254 206.30898 8 h after dark 200.3867105 194.529584 206.243837 12 h after dark 187.884504 187.884504 187.884504