condition mean min max 4 h after light 221.8 221.8 221.8 8 h after light 206.3 202.8 209.8 12 h after light 224.2 197.6 250.8 4 h after dark 195.9 188.5 203.3 8 h after dark 181.75 162.8 200.7 12 h after dark 189.3 171.1 207.5