condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.193928 0.0 0.406781 9 h after light 0.14481693333333334 0.0785508 0.260032 12 h after light 0.08122 0.0 0.32488 3 h after dark 0.04174566666666666 0.0 0.125237 6 h after dark 0.20419486666666664 0.0860112 0.427374 9 h after dark 0.17062929999999998 0.0731399 0.257407 12 h after dark 0.0985955 0.0 0.197191