WOR = \frac{\alpha_W(t) \cdot q_W^\uparrow}{\alpha_O(t) \cdot q_O^\uparrow}

ΣWOR = \frac{ \int\limits_0^t \alpha_W(t) \cdot q_W^\uparrow \, dt}{ \int\limits_0^t \alpha_O(t) \cdot q_O^\uparrow \, dt}

E[\alpha_W(t), \alpha_O(t)] = \sum_t \ \min D \big( P_{\rm mod}(t), P_{\rm hist}(t) \big)

D \big( P_1}(t), P_1(t) \big) = \sqrt{ \big( WOR_1 - WOR_2 \big)^2 +  \big( ΣWOR_1 - ΣWOR_2 \big)^2  }