datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,30 , 0.44446,14.91678,2.451819,3.079686
sgpcmbeC1.c1,2007,12 1:30:00,30 ,0.285452,11.94906, 2.77118, 3.32734
sgpcmbeC1.c1,2007,12 2:30:00,30 ,0.457468,21.35842,3.096882,5.016753
sgpcmbeC1.c1,2007,12 3:30:00,30 ,0.246293,20.02197,4.098285,5.108435
sgpcmbeC1.c1,2007,12 4:30:00,30 ,  0.4109,11.79071,2.486077,2.665765
sgpcmbeC1.c1,2007,12 5:30:00,30 ,0.304039,24.73037,3.591245,5.455496
sgpcmbeC1.c1,2007,12 6:30:00,30 ,0.356905,29.73149,3.647149,6.188343
sgpcmbeC1.c1,2007,12 7:30:00,30 ,0.390239,16.82493,2.103746,3.402539
sgpcmbeC1.c1,2007,12 8:30:00,30 ,0.434781,13.07042,1.693573,2.318613
sgpcmbeC1.c1,2007,12 9:30:00,30 ,0.423725,9.261514,2.046426,1.895273
sgpcmbeC1.c1,2007,1210:30:00,30 ,0.350154,27.06584,2.897903,4.938641
sgpcmbeC1.c1,2007,1211:30:00,30 , 0.33139,8.861185,1.896186,1.605084
sgpcmbeC1.c1,2007,1212:30:00,30 , 0.42089,7.325167,2.011371,1.939069
sgpcmbeC1.c1,2007,1213:30:00,30 ,0.336221,8.017687,1.803355,1.609924
sgpcmbeC1.c1,2007,1214:30:00,30 ,0.473734, 17.5701,2.469051,3.279763
sgpcmbeC1.c1,2007,1215:30:00,30 ,0.465392,12.04291,2.512346,3.258099
sgpcmbeC1.c1,2007,1216:30:00,30 ,0.411749,21.30909, 2.10434,3.912774
sgpcmbeC1.c1,2007,1217:30:00,30 ,0.541836,5.808055,1.682847,1.389242
sgpcmbeC1.c1,2007,1218:30:00,29 ,0.446865,13.04345,2.150182,2.598153
sgpcmbeC1.c1,2007,1219:30:00,29 ,0.435775,17.41721,3.483945,4.600866
sgpcmbeC1.c1,2007,1220:30:00,29 , 0.46243,20.75101,3.404811,4.926714
sgpcmbeC1.c1,2007,1221:30:00,29 ,0.462779,19.91014,3.443896,4.438925
sgpcmbeC1.c1,2007,1222:30:00,29 ,0.331959,16.54566,3.460581,4.440155
sgpcmbeC1.c1,2007,1223:30:00,29 ,0.336691,14.76493,3.055525,3.924143