The exhibit shows two lines for average handle time in two call-center shifts. Values shown: Day Shift (Mon: 310 seconds; Tue: 305 seconds; Wed: 298 seconds; Thu: 302 seconds; Fri: 295 seconds) | Evening Shift (Mon: 330 seconds; Tue: 322 seconds; Wed: 312 seconds; Thu: 300 seconds; Fri: 292 seconds). In which period is the gap between Day Shift and Evening Shift largest?