read serr 4
1 25.00    27.50 -0.010303 0.035684
2 27.50    30.25 0.021702 0.035433
3 30.25    33.28 -0.034495 0.035444
4 33.28    36.60 0.026406 0.035289
5 36.60    40.26 0.037542 0.035359
6 40.26    44.29 -0.010117 0.035414
7 44.29    48.72 0.063032 0.035414
8 48.72    53.59 0.007130 0.035348
9 53.59    58.95 0.040044 0.035359
10 58.95    64.84 0.029706 0.035433
11 64.84    71.33 0.061513 0.035377
12 71.33    78.46 0.025336 0.035319
13 78.46    86.31 0.005214 0.035333
14 86.31    94.94 -0.008848 0.035411
15 94.94   104.43 0.015182 0.035366
16 104.43   114.87 -0.025428 0.035381
17 114.87   126.36 0.033442 0.035403
18 126.36   139.00 -0.016058 0.035492
19 139.00   152.90 0.032220 0.035341
20 152.90   168.19 -0.009374 0.035455
21 168.19   185.01 0.099052 0.035537