Seniority means squat on reserve. Bout the only thing its good for is getting weekends off and thats only if you in the top 5 or so. A person with a mid 800 range seniority number, they are still looking at years....yes, years on reserve.
ATL - mid 500's till a h.s line
DTW- high 600's
MEM- mid 600's
MSP- low 600's