condition mean min max 4 h after light 317.89063 283.847441 351.933819 8 h after light 311.971701 247.634422 376.30898 12 h after light 363.5866525 318.095094 409.078211 4 h after dark 256.146074 92.213937 420.078211 8 h after dark 109.352076 50.888744 167.815408 12 h after dark 538.023278 538.023278 538.023278