condition mean min max 0 h after light 1.1156505 0.932641 1.29866 4 h after light 1.3620364999999999 0.912083 1.81199 8 h after light 1.69162 1.52025 1.86299 4 h after dark 1.82117 1.78563 1.85671 8 h after dark 1.50931 1.47087 1.54775 12 h after dark 1.407695 1.32394 1.49145