278 RAINFALL-COLLECTION RESULTS 1030 0930 1000 0300 0930 1900 1400 1250 1830 2300 0205 0130 1820 5/20 6/13 5/14 5/14 5/9 4/17 5/2 5/8 5/9 4/17 3/29 4/15 4/16 0315 0800 1900 1400 2130 0130 0335 0030 1130 0700 0920 1100 2000 To Period Peri 200 210 170 220 160 200 180 190 180 180 260 270 145 to 010 Degrees 26 13 15 11 Knots Wind Velocity Weighted Average * No value available. t Missed beginning of rainfall. t Pier value used for ground average. 5/14 5/20 5/11 5/14 5/9 5/8 4/16 4/17 4/17 5/1 5/8 3/29 4/13 From Rainfall resulting values. Max 450 520 910 397 385 150 720 525 1,740 2,540 760 500 805 540 410 150 240 65 375 110 295 235 320 235 1,970 2,900 Min Ground Average » Mean = 0.71624 0.402 0.968 40.111 0.389 + 0.072 f 0.397 + 0.246 0.641 20.223 t 0.83740.221 0.724 + 0.333 0.8174 0.354 0.501 4 0.536 0.6974 0.775 0.620 + 0.790 0.858 + 0.223 1.31024 0.280 0.547 + 0.223 Ground Average Pier LST Average Average Non-Platform Array m1/2.60 ft? 4704 10 4994 25 4834 50 * 1,418 + 242 5514 40 5052116 6344 60 2524154 9224131 345f 6914188 2424145 2,6844145 2,020 + 520 8134120 852 +143 6174 264 807+ 84 7594105 620 2 255 378+ 68 625+ 87 2634278 2084107 7444167 14524143 248+ 98 35524315 220+ 201 283+ 55 2964 55 2542 46 283+ 68 200+ 14 2624 53 2,3074919 4,220 + 381 3,752 + 358 Average Platform Array (LST-611) Rainfall catch 1.042 40.052 0.64220.110¢ 0.607 + 0.057 0.781+0.111¢ 1.0534 0.063 0.892+0.150 0.998 + 0.138 1.085 + 0.180 1.15420.594f 1.0562 0.937 0.997+0.185 1.6004 0.112 0.687 + 0.062 0.969 40.327 Average Ground LST Maximum platform of the LST-611 (Station D, Figure A.1) while the Collections were made In the trays of the OCC' s and AOC,' 8 on the standard Simultaneously, collections were made in two rectanguship was berthed at the San Francisco Naval Shipyard, Hunters Point (No.24). unobstructed area on the ground about 2,200 feet flat and in a lar arrays of 12 identical trays located at the end of the adjacent pler in the area (Nos. 815 and 511) and accompanying buildings two of tops the on sly northwest of the ship. Winds were measured continuou made with a hand-held instrument on the pilot house of the ship. rainfall measurements were madeon one (No. 815); a few readings were into a container graduated in milliliters; all values for a given array At regular intervals the contents of the trays were emptied directly wind velocities were calculated by averaging the separate average were later averaged and standard deviations computed. Weightedof the parallel rainfall measurements, and averaging the basis the on intervals different wind measurements, assigning weights to the TABLE B.31