condition mean min max 4 h after light 7.96264 6.10527 9.82001 8 h after light 5.729055000000001 5.51405 5.94406 12 h after light 4.458525 4.30992 4.60713 4 h after dark 5.73553 5.35309 6.03258 8 h after dark 6.68853 6.50088 7.01675 12 h after dark 6.8793033333333335 5.93563 8.17514