gi004_1_1.IDI: continuum pass (3IF, 32 frq.pt per IF/pol, t_int=4s) n = 1 gi004_2_1.IDI: line,LL pass (1IF, 512 frq.pt per IF/pol, t_int=4s) n = 1,2,3 gi004_3_1.IDI: line,RR pass (1IF, 512 frq.pt per IF/pol, t_int=4s) n = 1,2,3