condition mean min max 0 h after light 187.9745 181.924 194.025 4 h after light 228.7355 203.375 254.096 8 h after light 176.071 154.988 197.154 4 h after dark 254.1265 229.526 278.727 8 h after dark 303.3415 279.509 327.174 12 h after dark 222.346 205.997 238.695