datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 3:30:00,30 ,       0, 0.07835,0.002612,0.014305
sgpcmbeC1.c1,1999,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 6:30:00,30 ,       0, 11.2341,4.819351,3.948688
sgpcmbeC1.c1,1999,09 7:30:00,30 ,0.663803,27.28424,11.23068,7.036866
sgpcmbeC1.c1,1999,09 8:30:00,30 ,0.771533,36.79753,12.54988, 8.18486
sgpcmbeC1.c1,1999,09 9:30:00,30 ,1.058646,39.29877,13.50532,11.08381
sgpcmbeC1.c1,1999,0910:30:00,30 ,2.133112,33.47361, 12.5925,9.403387
sgpcmbeC1.c1,1999,0911:30:00,30 ,1.447934,58.28636,18.93882,16.75334
sgpcmbeC1.c1,1999,0912:30:00,30 ,0.452548,60.92641,19.57508,18.04798
sgpcmbeC1.c1,1999,0913:30:00,30 ,1.595639,53.41511,22.31714,17.97338
sgpcmbeC1.c1,1999,0914:30:00,30 ,1.611326,55.47128,22.97598,19.22924
sgpcmbeC1.c1,1999,0915:30:00,30 ,1.287131,58.64705,19.01437,15.97096
sgpcmbeC1.c1,1999,0916:30:00,30 ,1.182509, 34.0372, 15.5844,9.530647
sgpcmbeC1.c1,1999,0917:30:00,30 ,0.661314, 26.0702,11.53448,6.418889
sgpcmbeC1.c1,1999,0918:30:00,30 ,0.042036,9.481991,3.588555,2.833164
sgpcmbeC1.c1,1999,0919:30:00,30 ,       0,0.725123,0.035947,0.145253
sgpcmbeC1.c1,1999,0920:30:00,30 ,       0,0.680061,0.022669,0.124162
sgpcmbeC1.c1,1999,0921:30:00,30 ,       0,0.357377,0.011913,0.065248
sgpcmbeC1.c1,1999,0922:30:00,30 ,       0,0.470193,0.015673,0.085845
sgpcmbeC1.c1,1999,0923:30:00,30 ,       0,       0,       0,       0