Leitura de Cupom Fiscal

[GTSPLUS]

Oi pessoal!

Tenho um arquivo txt que são os cupons fiscais gerado por minha ECF, gostaria de efetuar a leitura do campo valor total que fica na linha T3.

Porém meu problema é que a linha T3 muda de posição conforme a quantidade de itens contidos no cupom, exemplo:

O campo T3 pode estar na terceira linha ou pode estar na 15 linha:

O que devo fazer para ler a linha T3?

Obrigado por qualquer ajuda

Fiquem com DEUS

Veja arquivo abaixo

202983 T01 7896229800056 0000100000000000299000000000029900000000000000000000000L00100400312010091608:36 FF00000000000000000000000000000000 0000 000 000000000000P00000000I00.00 202983000001 004000020100916 7896229800056000000000000000000000000000000000000 000001 00F 0000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

202983 T01 94 0000100500000000199000000000020000000000000000000000000L00100400312010091608:36 FF00000000000000000000000000000000 0000 000 000000000000P00000000I00.00 202983000002 004000020100916 94000000000000000000000000000000000000 000001 00F 0000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

202983 T01 3110 0000051600000001490000000000076900000000000000000000000L00100400312010091608:36 FF00000000000000000000000000000000 0000 000 000000000000P00000000T12.00 202983000003 004000020100916 3110000000000000000000000000000000000000 000001 00F 0000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

202983 T01 7896353300194 0000100000000000299000000000029900000000000000000000000L00100400312010091608:36 FF00000000000000000000000000000000 0000 000 000000000000P00000000F00.00 202983000004 004000020100916 7896353300194000000000000000000000000000000000000 000001 00F 0000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

202983 T03 0000000000000002000000000000200000000000000000000000000L00100400312010091608:36001 FF000000000000000000000001 0000 000 000000000433 00000000 202983000001 004000020100916 000000000000000000000000000000000000 00000000000000F 000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000