a,c for sites
observed # on leading strand: 44
observed # on lagging strand: 9
a for variable sites 
expected # on leading strand: 191.6664
expected # on lagging strand: 42.9757
c for all sites
expected # on leading strand: 22.645
expected # on lagging strand: 4.7762



b,d for genes
observed # on leading strand: 33
observed # on lagging strand: 8
b for variable sites 
expected # on leading strand: 78.4902
expected # on lagging strand: 17.0925
d for all sites
expected # on leading strand: 19.6497
expected # on lagging strand: 4.3543
