datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,08 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,08 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,08 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,08 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,08 5:30:00,31 ,       0,7.179323,2.425268,2.123856
sgpcmbeC1.c1,2002,08 6:30:00,31 ,       0,59.17749,34.40741,16.40219
sgpcmbeC1.c1,2002,08 7:30:00,31 ,       0,94.90387,52.82787, 23.1702
sgpcmbeC1.c1,2002,08 8:30:00,31 ,2.420261,157.0544,66.55594,33.41588
sgpcmbeC1.c1,2002,08 9:30:00,31 ,4.714368,159.5271,67.15351,38.64528
sgpcmbeC1.c1,2002,0810:30:00,31 ,17.90135,317.3567,75.43169,64.91247
sgpcmbeC1.c1,2002,0811:30:00,31 ,13.49547,296.1586,113.5879,91.11328
sgpcmbeC1.c1,2002,0812:30:00,31 ,2.469028,304.7886,119.6151,98.53618
sgpcmbeC1.c1,2002,0813:30:00,31 ,17.51552,321.2628,135.9086,94.22061
sgpcmbeC1.c1,2002,0814:30:00,31 ,21.71956,351.4736,  129.83,87.77715
sgpcmbeC1.c1,2002,0815:30:00,31 ,8.070853,253.0755,98.81586,58.98321
sgpcmbeC1.c1,2002,0816:30:00,31 ,15.64958,245.3278,82.69084,47.63344
sgpcmbeC1.c1,2002,0817:30:00,31 ,12.92986,144.8991,61.10068,27.83112
sgpcmbeC1.c1,2002,0818:30:00,31 ,15.54528,70.21072,42.22454, 13.1491
sgpcmbeC1.c1,2002,0819:30:00,31 ,       0,24.37113,6.722159,6.204879
sgpcmbeC1.c1,2002,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0821:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0823:30:00,31 ,       0,       0,       0,       0