In days past, flying Mr Boeing's Tri-motor, Eastern had lots of flights out of KFLL. The 9s were considerably shorter than presently and a rail track passed just off the end. There was a weight correction for "train on track" to account for a box car. As luck would have, I engineer'd a number of those flights, being tropical (for the US, anyway) just prior to sunset, temps were about 84-ish, with a light east wind, during the winter vacation rush, loads were heavy. It was common to have the manifest include "2 children in arms", some of the wind and a temp one degree less than the ATIS prior to pushback to get a legal RTOW. "Get the TEMP and the WIND prior to going, Captain".