condition mean min max 4 h after light 181.1485595 172.816595 189.480524 8 h after light 259.849896 240.295179 279.404613 12 h after light 253.3322785 247.085643 259.578914 4 h after dark 246.2966305 180.510761 312.0825 8 h after dark 148.5711445 102.154394 194.987895 12 h after dark 201.07239 201.07239 201.07239