condition mean min max 4 h after light 176.9438415 168.128426 185.759257 8 h after light 192.91967 189.232057 196.607283 12 h after light 229.5462945 207.207139 251.88545 4 h after dark 279.551734 249.596124 309.507344 8 h after dark 315.01411099999996 287.521078 342.507144 12 h after dark 296.828975 296.828975 296.828975