mo SO A ANN DQ oo S INNING : 2 P= a & a Oo & 0 l 1 Figure 13. (Aircrew Series—Legs) Composite Fatigue Curves Improving for Ten Consecutive Days. Each day they said they did their absolute best and each sub- sequent day they found they could do more through improved training. 180 160 140 {20 — 100 Ss it : s/s S/19 i) 5/22 eon Aor 2 wigs 4 ne 6 a — Figure 14. Composite Curves of Condition Corresponding to Four of the Days Shown in Figure 13. These curves show the improvement in condition through hard work. 34