condition mean min max 4 h after light 251.028073 221.770518 280.285628 8 h after light 204.2930225 170.9329 237.653145 12 h after light 212.1624905 161.227704 263.097277 4 h after dark 120.3326785 101.6936 138.971757 8 h after dark 98.92136550000001 82.155585 115.687146 12 h after dark 148.30898 148.30898 148.30898