trading levels oil

oil 1/7-10
trading levels lows 72,2 highs 77,85
R3 77,2
R2 76,4
R1 75,8
N VALUE 75,3
S1 74,4
S2 73,9
S3 73,1

This is today's levels that I use

sell as close to the highest level that is possible
buy as close to the lowest level that is possible
and sometimes it gets a little trade between levels if it feels right for the moment