datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,08 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,08 1:30:00,28 ,       0,0.087506,0.003125,0.016537
sgpcmbeC1.c1,2006,08 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,08 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,08 5:30:00,31 ,       0,11.59406,1.446348,2.291792
sgpcmbeC1.c1,2006,08 6:30:00,31 , 15.9903,109.6997,58.98833,29.62485
sgpcmbeC1.c1,2006,08 7:30:00,31 ,23.24176, 297.163, 206.004,77.70272
sgpcmbeC1.c1,2006,08 8:30:00,31 ,34.17816,507.6283,375.7879,133.0653
sgpcmbeC1.c1,2006,08 9:30:00,31 ,217.2698,693.7145,533.3114,149.0256
sgpcmbeC1.c1,2006,0810:30:00,31 ,224.4272,837.0136,657.9744, 178.703
sgpcmbeC1.c1,2006,0811:30:00,31 ,247.3123,1050.554,748.7669, 210.437
sgpcmbeC1.c1,2006,0812:30:00,31 ,312.3835,1013.496,796.4919,185.3219
sgpcmbeC1.c1,2006,0813:30:00,31 ,196.3309,946.5237,754.4455,173.6477
sgpcmbeC1.c1,2006,0814:30:00,31 ,269.5512,857.3934,677.2772,168.8213
sgpcmbeC1.c1,2006,0815:30:00,31 , 27.4247,726.9971,555.1138, 162.839
sgpcmbeC1.c1,2006,0816:30:00,31 ,11.49132,534.1846,385.0958,125.8254
sgpcmbeC1.c1,2006,0817:30:00,31 ,12.94173,338.5744,227.5696,74.54215
sgpcmbeC1.c1,2006,0818:30:00,31 ,12.62563,127.5008,75.80337,33.84517
sgpcmbeC1.c1,2006,0819:30:00,31 ,       0,19.58596,3.554017,4.376917
sgpcmbeC1.c1,2006,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0821:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0823:30:00,31 ,       0,       0,       0,       0