Zoomable Plot: Temperature vs Humidity vs Wind Speed

Three(3) Y-axis are shown. The plot can be zoomed to view tightly packed points. Use mouse down to drag, and mousewheel to zoom in/out. When the cursor is moved over a point it, and its companion points, are highlghted.
Scenerio:
Wind speed (MPH) is shown as a trend line at the base of the plot.

Cursor over data point shows point number, companion values, and date. A vertical red line indicates the specific time value.
JSON Data (395 values) : Date & Time (date), Temperature (ob), Humidity (tu), Wind Speed (ws) - 5 days, each 15 min.

Javascript:

OK in:IE11/CH41/FF35