PHOBOS data Bertsch-Pratt fit parameters for pi+pi+ and pi-pi- in the rapidity range 0.4 < y_pipi < 1.3 for the 15% most central Au+Au collisions. Momenta are in GeV/c and radii are in fm. Errors are statistical (1 sigma) followed by systematic (90% C.L.) Species sqrt(s_NN) lambda R_o R_s R_l R_ol^2 (fm^2) ============================================================================================================================ pi+pi+ 62.4 GeV 0.198 0.620 (0.046,0.075) 5.65 (0.33, 0.44) 5.11 (0.69, 0.61) 6.70 (0.44, 0.63) 1.9 (2.9 , 2.6 ) pi+pi+ 62.4 GeV 0.392 0.660 (0.055,0.069) 4.72 (0.34, 0.48) 4.74 (0.45, 0.42) 4.53 (0.31, 0.31) 0.85 (1.7 , 2.2 ) pi+pi+ 62.4 GeV 0.680 0.413 (0.073,0.083) 2.70 (0.60, 0.66) 3.94 (0.46, 0.67) 2.21 (0.52, 1.3 ) 0.26 (0.91, 0.91) ---------------------------------------------------------------------------------------------------------------------------- pi-pi- 62.4 GeV 0.198 0.574 (0.042,0.057) 5.79 (0.33, 0.33) 4.85 (0.73, 0.57) 6.17 (0.40, 0.76) 2.2 (2.9 , 2.9 ) pi-pi- 62.4 GeV 0.391 0.688 (0.059,0.070) 4.84 (0.34, 0.83) 4.62 (0.44, 0.45) 4.55 (0.31, 0.61) 0.33 (1.9 , 1.4 ) pi-pi- 62.4 GeV 0.673 0.532 (0.075,0.13 ) 3.58 (0.51, 1.1 ) 4.21 (0.48, 0.53) 2.53 (0.32, 0.36) -0.32 (1.2 , 2.0 ) ---------------------------------------------------------------------------------------------------------------------------- pi+pi+ 200 GeV 0.198 0.493 (0.028,0.041) 5.48 (0.27, 0.36) 4.09 (0.63, 0.66) 6.75 (0.33, 0.26) 4.9 (2.3 , 5.7 ) pi+pi+ 200 GeV 0.393 0.582 (0.041,0.086) 5.05 (0.28, 0.40) 4.64 (0.39, 0.40) 4.75 (0.25, 0.52) 0.96 (1.7 , 2.0 ) pi+pi+ 200 GeV 0.685 0.444 (0.049,0.082) 3.31 (0.32, 0.52) 3.96 (0.36, 0.20) 2.98 (0.29, 0.37) 0.25 (1.1 , 1.5 ) ---------------------------------------------------------------------------------------------------------------------------- pi-pi- 200 GeV 0.198 0.541 (0.036,0.048) 5.97 (0.31, 0.65) 4.79 (0.67, 1.3 ) 6.86 (0.38, 0.36) 5.7 (3.0 , 2.2 ) pi-pi- 200 GeV 0.393 0.559 (0.044,0.054) 4.59 (0.30, 0.43) 4.26 (0.39, 0.31) 4.89 (0.32, 0.49) 1.1 (1.9 , 3.0 ) pi-pi- 200 GeV 0.690 0.469 (0.055,0.060) 3.15 (0.37, 0.64) 4.08 (0.35, 0.25) 3.10 (0.31, 0.51) 0.93 (1.1 , 2.1 ) ----------------------------------------------------------------------------------------------------------------------------