Guys,

I've worked out a graph and I'm trying to work out the formula, but my equation display a E.

What does the E mean?

y = 1E-06x5 - 0.0002x4 + 0.0161x3 - 0.4893x2 + 7.5295x - 20.87


The above is taken from a graph from the values:

Length Reading
10 19
15 25
20 27
25 30
30 34
35 37
40 39
45 42
50 43
55 44


Thanks