4. The one-day 99% VaR for the four-index example is calculated in Section 13.1 as $253,385. Look at the underlying spreadsheets on the author's website and calculate (a) the 95% one-day VaR, (b) the 95% one-day ES, (c) the 97% one-day VaR, and (d) the 97% one-day ES.