My fourth field visit was on October 27 at 11:00 am. At this time, it was 44 degrees. The length of the day was 10 hours, 28 minutes, and 56 seconds. It was crisp outside with on and off sun. There wasn’t any rain or snow, but it was breezy. I heard some birds chirping, saw the massive hive again, and noticed all of the leaves that have changed color. My dissolved oxygen test showed that the water was 43% saturated today. The saturation has increased from last time when it was only 40% saturated.