Thank you both. Sorry for the dust bunny in the sky, left; I was in a hurry to post this. The image is brighter on my monitor, however. I have NC, PS, Pbase and the Cafe all up on my Sony LCD Monitor, all identical, bit for bit and sRGB. The PBase lacks the punch of the two in NC and PS. Since the images are exactly identical I wonder if PBase is doing something. I even tried the "original" trick. I may try Smugmug for comparison.
I'm even beginning to see the three gamma notches. I have no idea what they are and the science behind them, though they are there!