read serr 4
1 25.00    27.50 -0.007271 0.035627
2 27.50    30.25 0.056293 0.034975
3 30.25    33.28 0.120093 0.034893
4 33.28    36.60 0.040110 0.034932
5 36.60    40.26 -0.018707 0.034975
6 40.26    44.29 -0.005167 0.034978
7 44.29    48.72 0.043671 0.034886
8 48.72    53.59 0.059725 0.034982
9 53.59    58.95 -0.010568 0.034939
10 58.95    64.84 0.056998 0.035032
11 64.84    71.33 0.017256 0.035086
12 71.33    78.46 0.025444 0.034975
13 78.46    86.31 0.064740 0.034883
14 86.31    94.94 0.027830 0.034978
15 94.94   104.43 0.045230 0.035050
16 104.43   114.87 -0.011113 0.035126
17 114.87   126.36 0.027024 0.035086
18 126.36   139.00 0.102049 0.035072
19 139.00   152.90 0.035967 0.035079
20 152.90   168.19 0.037160 0.035093
21 168.19   185.01 0.002057 0.035108