Table:
text: List of tallest buildings in Latvia
Proposed and Under Construction Skyscrapers
Proposed and Under Construction Skyscrapers
Rank_ Name_ City Metres Floors
1 Z-Towers Riga 133 34
2 Panorama Plaza III Riga 114 32
3 Spice - office building Riga 114 28
4 Panorama Plaza IV Riga 99 25
5 Elipses Apartamenti Riga 96 31
6 Da Vinci apartments Riga 95 27
7 Symbiotic Tower Riga 91 24
8 Zaķusala Embankment I Riga 84 26
9 Zaķusala Embankment II Riga 84 26
10 Dzelzavas street 74 Riga 75 24
11 Office centre Skanste Riga 74 20
12 ABLV bank central office building Riga 74 20
13 The New Hanza city hotel building Riga 73 19
14 National Latvian Library Riga 68 13

Question: What is the average number of meters of 74 Dzelzavas Street in Latvia's list of tallest buildings?