Now the graph is ready to be digitalized easily.
5-Entering data into the hand digitalizer tool.
Open the hand digitalizer tool and resize both windows (MS Paint and Hand Digitalizer tool) so you can work with them together, like this:
(If you dont know how to resize a window, its very easy: go to the upper right corner and click on the "maximize/restore" icon next to the "x" icon that closes the window. Now put the pointer on a edge of the window: it turns to a double arrow. Push the mouse button and move the mouse to the desired size, while keeping the button pushed. Unpush the button and its done. If you need to move the window, click on the top colored bar of the window and move it keeping the buttom pushed).
The example pic has some data already filled in. Details on 5a and 5b:
5a-Select the right model (1,5 or 10nm wavebands) for the graph. You do it clicking on the right sheet on the bottom left:
5b-Check the vertical pixel number (y coordinate, explained on step 3a) on the bottom line of the graph and enter it on the only yellow cell of the B column in the tool (headed "pixel bottom"). Now click of the first yellow cell of the C column so you can start entering data if the graph starts at 381nm. If not, fill all the cells until you reach what correspond to the first nm of the graph (likely 401nm) with the same figure than the bottom line of the graph (its the "0" value)
To fill the C column of the sheet, put the pointer over the desired pixel of the line (if you did step 4, the pixel highlighted). Check the number of the y coordinate (second number on the bottom of MS Paint), enter it and press "Return" ("Enter"). Now the next cell is activated. Put the pointer on the next waveband pixel, enter it and press return. And so on until you reach the last waveband.
Following this procedure, you dont need to move the pointer between Paint and the tool. Put the pointer over the pixel, enter the data of it with the keyboard, then move the pointer to the next pixel, enter with the keyboard....You just need to move the pointer when you need to move the graph.
When you reach a divisor line, check you are entering pixel height on the right nm waveband. Doing this periodically avoid to reenter all the data if you jumped over a pixel.
Be aware some times two or more adyacent columns have same value, so they appear as a longer waveband. Remember to fill both wavebands with the same figure: 
6c-Now you have entered all the raw data. You have digitalized the graph. Before doing anything else, save the data. The SPD final data is shown on the D column. Single click the first yellow cell of this column. Then go down and while pressing "shift" click the last cell. All cells get ready to be copied together (they gets a darker color). Right click and select "copy".
The hand digitalize tool has a 4th sheet for it, tittled "SPDs". Select it by clicking it on the bottom of the sheet. Go to a free column, click on the second cell and righclick, select "special paste" and disable all the options on the left except the "numbers" one and accept.You already have copied the SPD. Now write the name of the SPD on the first cell. Save the sheet ("file" and "save").
Now you have digitalized the SPD graph sucessfully, so you may analyze it with the bulb's analyzer tool
The procedure is easier to do than to read. Its just a bit boring entering the data. Once you have done this, you will realize its very simple to do.
The idea is you digitalize your bulb if still its not on the digitalized SPD's library (the SPD's sheet of the hand digitalizer tool) and upload it, so next GC's member using same bulb will just need to copy it. An hour of work not only serve you to know better how you are lighting your plants, but its a service to other GC's members.
This way i hope we will have all bulbs SPDs digitalized soon.