Number of offices

108
105
102
99
96
93
89
86
83
80
77












































































































































































































































































21222324252627282930

The X-axis in the diagram shows:  Days
The Y-axis in the diagram shows:  Number of offices
 X:    21  22  23  24  25 
 Y:    108   105  99  95  96 
 X:    26  27  28  29   30 
 Y:    93  87  77  79  80