Month	Demand
1/1/2019	2323
2/1/2019	2804
3/1/2019	2469
4/1/2019	3278
5/1/2019	3617
6/1/2019	2669
7/1/2019	2010
8/1/2019	2715
9/1/2019	2890
10/1/2019	2973
11/1/2019	3485
12/1/2019	4548
1/1/2020	2429
2/1/2020	2495
3/1/2020	2595
4/1/2020	3383
5/1/2020	3426
6/1/2020	3654
7/1/2020	2629
8/1/2020	2996
9/1/2020	3150
10/1/2020	3924
11/1/2020	4185
12/1/2020	4982
1/1/2021	2712
2/1/2021	3229
3/1/2021	3077
4/1/2021	3646
5/1/2021	3998
6/1/2021	4062
7/1/2021	3171
8/1/2021	3638
9/1/2021	3623
10/1/2021	4050
11/1/2021	4528
12/1/2021	5702

What is the calculated value of the highest average seasonal index located in Cell E51 of worksheet: SI and regression?

What is the calculated value of the 3-year total demand in Cell C53 of worksheet: SI and regression? (Over the 3 year period from your historical data, what was the total demand)