image532 is really good of South Italy - 4030'54''N, 1657'31''E
40°30'54''N, 16°57'31''E '2023:04:27 08:14:45' lat: (1.0, 40.0, 32.0, 12.003965541254729) long: (1.0, 19.0, 26.0, 8.358360264101066) -> This "pin" is off-centre.
Shkodra Lake: 43.56km ~ 105 pixels
12648 / 100000
Vertical GSD:
43.65 / 103 * 100000 42378.64077669903 GSD in cm/pix
Horizontal GSD:
25.86 ~ 56 pixels Predicted: 7.08288 25.86 / 53 * 100000 = 46178.57142857143 GSD in cm/pix
10 GSD samples: count 10.000000 mean 40974.192550 std 5981.844125 min 26866.666667 25% 39178.857907 50% 41037.913000 75% 44820.616155 max 48792.452830
After running all 1280x720 the closest mean (minimised MSE) came with GSD of 39588.