final adjustments

[fhmjones]

After discussion with Maite M., Nov 9, 2021.

• The chosen nitrate data are all good.
• Re. noisy data at GIPY05 station 18: remove 4 rows that have "low" salinities at depths: 78.6, 98.6, 149.8, 172.8. That's all - the rest can remain.
• Remove all of station PS71/101 from GIPY04/05 . That station is next to station "34(super 2)". It is noisier, and so close that it is not obvious that there are two stations there. A potential source of confusion.
• Please add the month when data were acquired to the legend message. Currently, station 18 (Super 1) has a 3-line legend message with name, lat and lon. I suggest adding a fourth line with month between name and lat. Or - add month to the name, although that makes the legend message longer which "wastes" screen space I think.
• Need to add a note that ratio was calculated. The "*" for Sigma0 is great - add another similar note for the ratio. Say roughly what was done in as few words as possible. The title "Nitrate/Iron" may have to become " NO3 / Fe ** ", or something like that.
• Also in instructions, change: "Mouse wheel zooms within the map." to "Zoom in a data panel: click and drag, then double click to reset. Map: use mouse wheel to zoom."
• Please make the 4th colour something other than "light brown". It is too similar to the first colour "brown". Maybe cyan? Or pink? This is low priority because more than 3 traces is too much to view anyway.