condition	mean	min	max
0 h after light	6.776705	6.60006	6.95335
4 h after light	4.237025	3.68076	4.79329
8 h after light	6.353495000000001	6.16932	6.53767
4 h after dark	7.425965	7.37917	7.47276
8 h after dark	7.32092	6.84443	7.79741
12 h after dark	5.26375	4.95695	5.57055