fixed grammar

_posts/2024-07-21-fragmenting-the-tile-data.markdown

@@ -86,13 +86,14 @@ For comparison, here's the plot for the 2240 colour tiles of size
 
 ![sub-band sizes for the 2240 colour tiles of size 500x500](/img/subband_sizes_tiles500.png)
 
-Here the most frequent number of part (36) does not fit to the
-abovementioned formula but we also have colour images, thus three
-components (probably [YCbCr](https://en.wikipedia.org/wiki/YCbCr)). I
-suppose that the Y component (luma) is encoded in more detail (=higher
-depth) than the colour components. For example, having depth 5 for
-luma and depth 3 for Cb and Cr each, would result in 36 sub-bands (3 *
-5 + 1 + (2 * (3 * 3 + 1)).
+Most of these tiles have 36 parts that represent encoded sub-bands
+which does not fit to the abovementioned formula. However, we also
+have colour images, thus three components (probably
+[YCbCr](https://en.wikipedia.org/wiki/YCbCr)). I suppose that the Y
+component (luma) is encoded in more detail (=higher depth) than the
+colour components. For example, having depth 5 for luma and depth 3
+for Cb and Cr each, would result in 36 sub-bands (3 * 5 + 1 + (2 *
+(3 * 3 + 1)).
 
 A good starting point for further reading is Chapter 16 "Wavelet-Based
 Image Compression" of the book [Introduction to Data