95 c l 0 20 0 23 0 17 ball burst impact at 73 u00b0 f 0 50 in diam sphere hd cm kg sup 8average 11 5 11 5 11 5 8 5std dev 0 6 0 6 1 0 0 495 c l 0 9 0 9 1 6 0 6optical properties at 73 u00b0 f haze sup 9avg 0 3 0 4 0 3 1 6std dev 0 1 0 1 0 0 0 195 c l 0 2 0 1 0 0 0 2 t trans sup 10avg 92 2 92 3 92 3 92 4std dev 0 1 0 1 0 1 0 195 c l 0 2 0 1 0 1 0 1clarity sup 11avg 83 1 83 4 85 8 std dev 2 5 1 4 1 3 95 c l 3 9 2 2 2 0 gloss 45 u00b0 sup 12avg 99 100 100 92std dev 1 1 1 195 c l 2 1 2 2percent elastic recovery after15 elongation at 73 u00b0 f sup 13av long 94 00 94 00 92 00 94 40 std dev 0 94 0 55 1 22 0 92 95 c l 1 50 0 87 1 94 1 47 av trans 91 67 90 33 91 84 92 07 std dev 1 27 2 07 0 84 0 77 95 c l 2 03.