datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,06 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 5:30:00,28 ,       0,12.21828,6.507773,3.021063
sgpcmbeC1.c1,1998,06 6:30:00,28 ,3.118435,54.40211,36.85725,17.37305
sgpcmbeC1.c1,1998,06 7:30:00,28 ,11.33238,98.35963,71.67828,28.03048
sgpcmbeC1.c1,1998,06 8:30:00,28 , 13.3577,135.7242,101.8248,38.46434
sgpcmbeC1.c1,1998,06 9:30:00,28 , 2.62194,163.8278,121.3728,48.63899
sgpcmbeC1.c1,1998,0610:30:00,28 ,25.14907,175.9908, 141.866,44.23617
sgpcmbeC1.c1,1998,0611:30:00,28 ,23.73962, 185.573,153.0548,  43.939
sgpcmbeC1.c1,1998,0612:30:00,28 ,24.95575,192.5257,161.8239,34.32746
sgpcmbeC1.c1,1998,0613:30:00,27 ,62.32231,184.1026,161.2253,25.38888
sgpcmbeC1.c1,1998,0614:30:00,27 ,57.42084,173.7802,148.7191,25.10768
sgpcmbeC1.c1,1998,0615:30:00,27 ,13.73141,157.4923,128.8832,35.96965
sgpcmbeC1.c1,1998,0616:30:00,27 , 14.4759,132.7108,98.22649,36.68114
sgpcmbeC1.c1,1998,0617:30:00,27 ,2.869643,108.4671,72.06685,28.42354
sgpcmbeC1.c1,1998,0618:30:00,26 , 2.69945,55.24996,38.95595,14.99164
sgpcmbeC1.c1,1998,0619:30:00,26 , 0.06972,23.54791,8.509295,5.071787
sgpcmbeC1.c1,1998,0620:30:00,26 ,       0,0.528457,0.020325,0.103639
sgpcmbeC1.c1,1998,0621:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0622:30:00,26 ,       0,0.582394,  0.0224,0.114217
sgpcmbeC1.c1,1998,0623:30:00,27 ,       0,       0,       0,       0