condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0237353 0.0 0.0363855 9 h after light 0.022421066666666666 0.0 0.0672632 12 h after light 0.034200525 0.0 0.0694136 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.016469 0.0 0.032938