Table:
0
A
B
C
D
E
F
G
H
1
Episode
1st season
2nd season
3rd season
4th season
5th season
6th season
7th season
2
1
4 396 564
6 993 951
7 411 177
8 731 526
8 505 195
7 296 506
6 289 835
3
2
4 308 423
7 003 036
7 168 720
8 781 551
7 812 933
6 871 595
6 463 328
4
3
4 674 041
6 896 669
6 373 730
8 532 874
7 201 978
6 554 510
6 129 170
5
4
4 917 123
6 594 469
6 989 417
8 856 741
7 448 975
6 649 278
6 070 625
6
5
4 930 817
6 806 420
6 858 379
8 135 420
7 039 028
6 526 647
5 467 634
7
6
4 416 068
6 220 465
6 943 357
8 104 889
6 858 208
5 973 975
6 373 755
8
7
4 314 409
6 691 196
7 014 966
7 697 001
5 750 352
6 138 934
6 863 240
9
8
4 245 310
5 957 569
6 730 041
8 528 782
6 100 137
6 622 856
6 394 566
10
9
4 832 273
6 919 954
7 187 346
8 104 969
6 254 249
5 385 754
6 607 831
11
10
4 459 323
6 825 023
6 622 214
7 765 372
6 645 897
6 461 324
6 256 213
12
11
5 017 929
7 735 820
6 990 594
7 993 829
5 452 660
5 941 067
6 805 863
13
12
5 218 512
7 102 324
6 494 720
7 585 219
6 184 945
5 156 260
6 145 820
14
13
7 397 082
4 758 730
6 891 813
8 872 069
5 538 714
5 363 702
6 406 260

Questions and formulas:
Question: How many 7th season episodes had 2nd season viewerships of 6 594 469?
Formula: ROWS(UNIQUE(FILTER(H1, C1="6 594 469")))
Formula2: ROWS(UNIQUE(FILTER(H2:H14, C2:C14="6 594 469")))
Level: medium