On Ethereum mainnet, what was the Uniswap v4 spot price of pool 0x50b00c1a5a8e582ec808e97e71598cd135206a9f9c548eab2ed73659e7ee5fa8 (ETH/USDT, currency0/currency1) as the median over 13 evenly spaced blocks of the window (blocks 26127338 to 26127636, about 2 hours before 26128234), as currency1 per 1e18 raw currency0 in raw units?