datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,25 ,       0,3.526309,1.998345,0.979274
sgpcmbeC1.c1,2005,12 1:30:00,22 ,       0,3.243486,1.735182,1.042726
sgpcmbeC1.c1,2005,12 2:30:00,23 ,       0,3.310353, 1.84234,1.143446
sgpcmbeC1.c1,2005,12 3:30:00,26 ,       0,3.289222,2.041145,1.061696
sgpcmbeC1.c1,2005,12 4:30:00,27 ,       0,3.323566,1.640214, 1.11534
sgpcmbeC1.c1,2005,12 5:30:00,28 ,       0,3.196771,1.647876,1.102002
sgpcmbeC1.c1,2005,12 6:30:00,29 ,       0,3.465257,1.489087,1.190541
sgpcmbeC1.c1,2005,12 7:30:00,31 ,0.183112,10.42822,2.464181,2.463527
sgpcmbeC1.c1,2005,12 8:30:00,31 ,0.059586,122.8435,51.40512,40.55972
sgpcmbeC1.c1,2005,12 9:30:00,31 , 0.21452,275.9336,131.8389,104.7563
sgpcmbeC1.c1,2005,1210:30:00,31 , 0.49884,401.1808,199.3081,163.6377
sgpcmbeC1.c1,2005,1211:30:00,30 ,0.060623,476.7178,257.2259,200.8908
sgpcmbeC1.c1,2005,1212:30:00,31 ,       0,491.2376,272.7631,201.3278
sgpcmbeC1.c1,2005,1213:30:00,31 ,0.004646,454.6302,263.6549,178.2636
sgpcmbeC1.c1,2005,1214:30:00,31 ,       0, 373.394,211.7893,154.6981
sgpcmbeC1.c1,2005,1215:30:00,31 ,       0,245.9861,124.1427,98.06933
sgpcmbeC1.c1,2005,1216:30:00,31 ,0.002216,94.72323,37.72555,32.95903
sgpcmbeC1.c1,2005,1217:30:00,31 ,       0,4.094002,1.801753,1.205975
sgpcmbeC1.c1,2005,1218:30:00,22 ,       0,3.339718, 1.54276,1.211697
sgpcmbeC1.c1,2005,1219:30:00,23 ,       0, 3.52066, 1.58178,1.206612
sgpcmbeC1.c1,2005,1220:30:00,23 ,       0,3.623746, 1.66074,1.360319
sgpcmbeC1.c1,2005,1221:30:00,22 ,       0,3.287981,1.356041,1.238086
sgpcmbeC1.c1,2005,1222:30:00,22 ,0.000078,3.283373,1.942679,1.114861
sgpcmbeC1.c1,2005,1223:30:00,24 ,       0,3.457633, 1.96673,1.154923