datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,25 ,0.517279,6.429853, 1.78668,1.434685
sgpcmbeC1.c1,2005,01 1:30:00,24 ,0.515497,6.994943,1.849538,1.452196
sgpcmbeC1.c1,2005,01 2:30:00,24 ,0.507583,6.800422,1.826692,1.349644
sgpcmbeC1.c1,2005,01 3:30:00,24 ,0.515015,6.019738,1.853462,1.401953
sgpcmbeC1.c1,2005,01 4:30:00,24 ,0.511209,7.521662,1.769857,1.377781
sgpcmbeC1.c1,2005,01 5:30:00,24 ,0.508554,6.385291,1.733499,1.189236
sgpcmbeC1.c1,2005,01 6:30:00,24 ,0.503039,5.111823,1.731853,1.070366
sgpcmbeC1.c1,2005,01 7:30:00,24 ,0.405128,6.987896,1.783366, 1.38295
sgpcmbeC1.c1,2005,01 8:30:00,26 ,0.337902,7.151191,1.713415,1.315685
sgpcmbeC1.c1,2005,01 9:30:00,25 ,0.306929,  7.1027,1.743008,1.284754
sgpcmbeC1.c1,2005,0110:30:00,25 ,0.305625,6.972416,1.728812,1.293334
sgpcmbeC1.c1,2005,0111:30:00,25 ,0.288492,7.000179,1.754207,1.374313
sgpcmbeC1.c1,2005,0112:30:00,25 , 0.36185,7.867117,1.738234,1.444684
sgpcmbeC1.c1,2005,0113:30:00,25 ,0.392978,7.559945,1.685696, 1.35123
sgpcmbeC1.c1,2005,0114:30:00,25 ,0.443102,7.032056,1.660202,1.257905
sgpcmbeC1.c1,2005,0115:30:00,24 ,0.469615,2.643444,  1.4274,0.587159
sgpcmbeC1.c1,2005,0116:30:00,25 ,0.513571,7.666879,1.681497,1.377394
sgpcmbeC1.c1,2005,0117:30:00,25 ,0.531117,7.737026,1.717414,1.443464
sgpcmbeC1.c1,2005,0118:30:00,25 ,0.530667,  7.5421, 1.73704,1.445352
sgpcmbeC1.c1,2005,0119:30:00,25 ,0.530446,7.972443,1.755609,1.506201
sgpcmbeC1.c1,2005,0120:30:00,25 ,0.517429,7.662182,1.751897,1.461815
sgpcmbeC1.c1,2005,0121:30:00,25 ,0.482694,6.971964,1.789769,1.499702
sgpcmbeC1.c1,2005,0122:30:00,24 ,0.496964,7.297914,1.591483,1.309801
sgpcmbeC1.c1,2005,0123:30:00,25 ,0.503355,7.533518,1.791274,1.647387