datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 7:30:00,31 ,       0,13.31866,  4.8658,3.613071
sgpcmbeC1.c1,1999,01 8:30:00,31 ,2.715294,61.37334, 27.7939,18.32496
sgpcmbeC1.c1,1999,01 9:30:00,31 ,3.596677,118.8365,37.28727,28.77101
sgpcmbeC1.c1,1999,0110:30:00,31 ,5.085474,138.5275,39.97102,26.45659
sgpcmbeC1.c1,1999,0111:30:00,31 , 2.84099,135.0905,44.63694,36.32756
sgpcmbeC1.c1,1999,0112:30:00,31 ,3.283057,142.7537,50.93366,41.13116
sgpcmbeC1.c1,1999,0113:30:00,31 ,5.097627,148.7374,43.20422,36.38339
sgpcmbeC1.c1,1999,0114:30:00,31 ,6.261902,143.4088,50.41747,39.16742
sgpcmbeC1.c1,1999,0115:30:00,31 ,3.491832,68.95715,35.04343,18.41382
sgpcmbeC1.c1,1999,0116:30:00,31 ,2.537022,89.12333,36.96905,23.90266
sgpcmbeC1.c1,1999,0117:30:00,31 ,       0,31.04089,13.42386,7.985763
sgpcmbeC1.c1,1999,0118:30:00,31 ,       0,0.686715,0.022152,0.123338
sgpcmbeC1.c1,1999,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0120:30:00,31 ,       0,0.483008,0.015581,0.086751
sgpcmbeC1.c1,1999,0121:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0123:30:00,28 ,       0,       0,       0,       0