todo/suggestion: this is another spot that only tags the beginning and end of a run of data that are likely to be problematic and need to be flagged. The first data point where the slope ahead is greater than the threshold is *technically* an acceptable value. The flag for slope ahead should actually be the NEXT observation.
_Originally posted by @steeleb in https://github.com/rossyndicate/poudre_sonde_network/pull/18#discussion_r1294882863_
Essentially, remove the part in the code where we flag
slope_ahead >= slope_thresh
. Preserveslope_behind >= slope_thresh