I have a dataset in spreadsheets, which is basically the data about every trip of the train in New York Subway.
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║ trip ║ id ║ arrival_time ║ departure_time ║ stop_id ║ stop_sequence ║ Station ║
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║ GO505 ║ 20_2 ║ 0:06:00 ║ 0:06:00 ║ 237 ║ 1 ║ Penn Station ║
║ GO505 ║ 20_2 ║ 0:18:00 ║ 0:18:00 ║ 214 ║ 2 ║ Woodside ║
║ GO505 ║ 20_2 ║ 0:23:00 ║ 0:23:00 ║ 55 ║ 3 ║ Forest Hills ║
║ GO505 ║ 20_2 ║ 0:25:00 ║ 0:25:00 ║ 107 ║ 4 ║ Kew Gardens ║
║ GO505 ║ 20_2 ║ 0:29:00 ║ 0:32:00 ║ 102 ║ 5 ║ Jamaica ║
║ GO505 ║ 20_2 ║ 0:47:00 ║ 0:47:00 ║ 183 ║ 6 ║ Rockville Centre ║
║ GO505 ║ 20_2 ║ 0:50:00 ║ 0:50:00 ║ 225 ║ 7 ║ Baldwin ║
║ GO505 ║ 20_2 ║ 0:53:00 ║ 0:53:00 ║ 64 ║ 8 ║ Freeport ║
║ GO505 ║ 20_2 ║ 0:56:00 ║ 0:56:00 ║ 226 ║ 9 ║ Merrick ║
║ GO505 ║ 20_2 ║ 0:59:00 ║ 0:59:00 ║ 16 ║ 10 ║ Bellmore ║
║ GO505 ║ 20_2 ║ 1:02:00 ║ 1:02:00 ║ 215 ║ 11 ║ Wantagh ║
║ GO505 ║ 20_2 ║ 1:05:00 ║ 1:05:00 ║ 187 ║ 12 ║ Seaford ║
║ GO505 ║ 20_2 ║ 1:07:00 ║ 1:07:00 ║ 136 ║ 13 ║ Massapequa ║
║ GO505 ║ 20_2 ║ 1:09:00 ║ 1:09:00 ║ 135 ║ 14 ║ Massapequa Park ║
║ GO505 ║ 20_2 ║ 1:12:00 ║ 1:12:00 ║ 8 ║ 15 ║ Amityville ║
║ GO505 ║ 20_2 ║ 1:15:00 ║ 1:15:00 ║ 38 ║ 16 ║ Copiague ║
║ GO505 ║ 20_2 ║ 1:18:00 ║ 1:18:00 ║ 117 ║ 17 ║ Lindenhurst ║
║ GO505 ║ 20_2 ║ 1:23:00 ║ 1:23:00 ║ 27 ║ 18 ║ Babylon ║
║ GO505 ║ 20_3 ║ 1:00:00 ║ 1:00:00 ║ 27 ║ 1 ║ Babylon ║
║ GO505 ║ 20_3 ║ 1:05:00 ║ 1:05:00 ║ 117 ║ 2 ║ Lindenhurst ║
║ GO505 ║ 20_3 ║ 1:08:00 ║ 1:08:00 ║ 38 ║ 3 ║ Copiague ║
║ GO505 ║ 20_3 ║ 1:10:00 ║ 1:10:00 ║ 8 ║ 4 ║ Amityville ║
║ GO505 ║ 20_3 ║ 1:13:00 ║ 1:13:00 ║ 135 ║ 5 ║ Massapequa Park ║
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I need to split it somehow into the parts based on the sequences in stop_sequence. Each sequence from 1 to n (here, 18) means 1 trip of the train. So, for example, I need to count the time of each trip (which is departure_time of each last stop_sequence - arrival_time of the first stop_sequence) for each trip (There are about 5,000 of them). How can I somehow do it? I wish I could split the column in python with pandas into several trips and calculate the time for each trip. But I do not know how to do it.
My expected output is
trip id ║ Duration of the trip
GO505 20_2 ║ x:xx:xx
GO505 20_3 ║ x:xx:xx
I am new in data science. Please help!
Range A:G -> the data about every trip of the train
Cell I1:=QUERY({ArrayFormula(A:A&" "&B:B),ArrayFormula(VALUE(C:D))},"select Col1,max(Col3)-min(Col2) where Col1!=' ' group by Col1 label max(Col3)-min(Col2) 'Duration of the trip' format max(Col3)-min(Col2) 'hh:mm:ss'")
Function References