Well, the piece starts in e minor. group 1 lasts for the first 8 bars and ends on a HC in the key of e minor. the following bars seem as though they're going to repeat the theme, but then begin modulating to the key of G Major (relative major) as is evident by the IAN in measure 14.
the next 16 bars seem to be a transition to the group 2 theme. they are modulating the now dominant key of D Major as is made strikingly obvious and then is reaffirmed in measure 25 with the viio7/V followed by a V (we modulated to the key of V).
Group two is from measures 30-35 and in back in G Major. There is a restatement of the group two theme after a beat of extended rest. There seems to be a PAC in m. 42 but with the cadential extension/transition to the development, there is an IAC in the key of G major in m. 45.
The development begins in m. 46 and is in a minor. There is a HC in a minor at measure 50. 51 seems to go the relative major key of C Major. At measure 71 Haydn develops group 1 by inverting the structure. Here is a HC in the key of e minor at measure 78. the original structure comes back in measure 79 and in e minor. we then modulate to the key of B major in the next transitional period and ends with a PAC in B major.
in measure 95 it's back in e minor with a small development section. there is a PAC in 100 and in measure109. The rest of the piece is clearly the terminative section that ends with a PAC in e minor.
this is a pretty bad blog...i'm tired...what can i say?