condition mean min max 4 h after light 4.25609 2.0261 6.12223 8 h after light 5.033563333333333 2.04357 6.708 12 h after light 7.832363333333333 5.67663 10.4132 4 h after dark 3.18969 2.19282 4.43004 8 h after dark 6.77442 3.51409 8.67857 12 h after dark 12.8371 10.4864 16.2477