Question: What is the grade of the Helsinki metro station that has 240 bicycle and 420 car parking spaces ?

text: List of Helsinki Metro stations
Current metro line
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The names are listed first in Finnish , then in Swedish ( and English , if applicable1 ) . Bus transfers are not listed .
The Helsinki Metro is a metro system in Helsinki, Finland. It was opened on 2 August 1982 and remains the only metro system in Finland and the furthest north in the world. It is operated by Helsinki City Transport (HKL) for Helsinki Regional Transport Authority (HSL) and carries over 60 million passengers per year (62.8 million in 2017). The system contains a single forked line with 25 stations along a total length of 35 kilometres (22 mi), running from southern Espoo via central Helsinki to the East Helsinki suburbs. The fourteen stations in Espoo, western and central Helsinki and Puotila and Itäkeskus stations are located in a tunnel, the rest being on surface. The Länsimetro extension continues the line into western Helsinki and the neighbouring municipality of Espoo.
Station Opened Transfer Grade
Aalto-yliopisto Aalto-universitetet / Aalto University 2017 - Underground
Hakaniemi Hagnäs 1982 Tram : 3 6 6T 7 9 Underground
Herttoniemi Hertonäs 1982 - At-grade
Itäkeskus Östra centrum 1982 - At-grade
Helsingin yliopisto Helsingfors universitet / University of Helsinki 1995 Tram : 3 6 6T 9 Underground
Kalasatama Fiskehamnen 2007 - Elevated
Kamppi Kampen 1983 Tram : 7 9 Underground
Keilaniemi Kägeludden 2017 - Underground
Koivusaari Björkholmen 2017 - Underground
Kontula Gårdsbacka 1986 - At-grade
Kulosaari Brändö 1982 - At-grade
Lauttasaari Drumsö 2017 - Underground
Matinkylä Mattby 2017 - Underground
Mellunmäki Mellungsbacka 1989 - Elevated
Myllypuro Kvarnbäcken 1986 - At-grade
Niittykumpu Ängskulla 2017 - Underground
Puotila Botby gård 1998 - Underground
Rautatientori Järnvägstorget / Central Railway Station 1982 Tram : 3 5 6 6T 7 9 Commuter rail Underground
Rastila Rastböle 1998 - At-grade
Ruoholahti Gräsviken 1993 Tram : 8 Underground