What is the exception applicable to basic VFR weather minimums in FAR 91.155? Question applies to operating an Airplane.

The part 91 regulation regarding Basic VFR weather minimums in Class G airspace states (in the FAR 91.155 chart):

For aircraft other than helicopters:

Day, except as provided in 91.155(b): 1 statute mile and clear of clouds. 

When I refer to 91.155 (b) I don't see any exceptions pertaining to airplanes operating in Class G airspace during the day.  The exception noted for airplanes only pertains to night time.

Is there some reason this regulation indicates that an exception does exist for daytime operations?
CFR 91.155(b)(2) has the exception: 


  (2)Airplane, powered parachute, or weight-shift-control aircraft. If the visibility is less than 3 statute miles but not less than 1 statute mile during night hours and you are operating in an airport traffic pattern within 1/2 mile of the runway, you may operate an airplane, powered parachute, or weight-shift-control aircraft clear of clouds.


So if the visibility is less than 3 statute miles (not less than one statute mile at night), you can operate in Class G as long as you are clear of the clouds and within 1/2 mile of the runway. It does not mean that the entire exception applies at night, only that at night, you need to have at least 1 mile of visibility, otherwise during the day you can operate down to nothing as long as you are clear of the clouds.