datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,08 0:30:00,30 ,2.029733,5.179832,3.893182, 0.74591
sgpcmbeC1.c1,2002,08 1:30:00,30 ,   1.887,5.195415,3.943591,0.724502
sgpcmbeC1.c1,2002,08 2:30:00,29 ,1.769746,5.390635,4.003052,0.740381
sgpcmbeC1.c1,2002,08 3:30:00,28 , 1.79324, 5.41237,3.995272,0.729398
sgpcmbeC1.c1,2002,08 4:30:00,29 ,1.825647,5.367928,3.966306,0.688623
sgpcmbeC1.c1,2002,08 5:30:00,29 ,1.824131,5.536512,3.978661,0.718029
sgpcmbeC1.c1,2002,08 6:30:00,29 ,1.813945,5.878796,3.973333,0.771236
sgpcmbeC1.c1,2002,08 7:30:00,27 ,1.749811,5.108612,3.841712,0.661553
sgpcmbeC1.c1,2002,08 8:30:00,27 ,1.718782,5.052935,3.818694,0.670913
sgpcmbeC1.c1,2002,08 9:30:00,30 ,1.709173,5.229902,3.917877,0.711777
sgpcmbeC1.c1,2002,0810:30:00,30 ,1.814006, 5.14128,3.906355,0.691953
sgpcmbeC1.c1,2002,0811:30:00,29 , 1.96186,5.181575,3.889202,0.674909
sgpcmbeC1.c1,2002,0812:30:00,30 ,1.925126,5.188472,3.948492,0.666954
sgpcmbeC1.c1,2002,0813:30:00,30 ,1.960831,5.307737,3.960614,0.649173
sgpcmbeC1.c1,2002,0814:30:00,30 ,2.052446,5.210822,3.966509,0.663698
sgpcmbeC1.c1,2002,0815:30:00,30 ,2.171491,5.047352,3.945899,0.625345
sgpcmbeC1.c1,2002,0816:30:00,30 ,2.192508,4.942542,3.948615,0.631324
sgpcmbeC1.c1,2002,0817:30:00,30 ,2.384057,5.009497,3.971115,0.618263
sgpcmbeC1.c1,2002,0818:30:00,30 ,2.485743,5.155853,3.958879,0.630242
sgpcmbeC1.c1,2002,0819:30:00,30 ,2.496177,5.216493,3.969798,0.663731
sgpcmbeC1.c1,2002,0820:30:00,30 ,2.466423,5.114117,3.960355,0.693646
sgpcmbeC1.c1,2002,0821:30:00,30 ,2.262039,5.525059, 3.95009,0.782775
sgpcmbeC1.c1,2002,0822:30:00,30 ,2.164341,5.846076,3.902714,0.845866
sgpcmbeC1.c1,2002,0823:30:00,30 ,2.173419,5.670573,3.900139, 0.81869