datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,21 ,       0,226.3185,31.59441,58.78544
sgpcmbeC1.c1,2005,02 1:30:00,21 ,       0,328.3325,32.24379,75.35852
sgpcmbeC1.c1,2005,02 2:30:00,20 ,       0,89.33644,13.49706,25.34937
sgpcmbeC1.c1,2005,02 3:30:00,20 ,       0,81.12585,10.32221,19.77474
sgpcmbeC1.c1,2005,02 4:30:00,19 ,       0,44.44743, 6.02116,10.53697
sgpcmbeC1.c1,2005,02 5:30:00,17 ,0.023397,45.33036,7.571717,12.91943
sgpcmbeC1.c1,2005,02 6:30:00,18 ,0.260474,459.7549,32.13151,107.1874
sgpcmbeC1.c1,2005,02 7:30:00,16 ,0.040514,21.61642,3.968337,6.619056
sgpcmbeC1.c1,2005,02 8:30:00,21 ,       0,79.56062,13.92984,23.60477
sgpcmbeC1.c1,2005,02 9:30:00,23 ,       0,301.2275,23.90071,64.07617
sgpcmbeC1.c1,2005,0210:30:00,24 ,       0,134.3067, 14.2546,30.35777
sgpcmbeC1.c1,2005,0211:30:00,25 ,       0,133.9222, 14.3601,29.44441
sgpcmbeC1.c1,2005,0212:30:00,26 ,       0,121.1202,20.01748,28.79701
sgpcmbeC1.c1,2005,0213:30:00,26 ,0.301128,167.8334,22.93787,40.63141
sgpcmbeC1.c1,2005,0214:30:00,26 ,0.145987,  313.64,29.04906,64.26686
sgpcmbeC1.c1,2005,0215:30:00,26 ,0.027606, 306.902,33.47399,68.83823
sgpcmbeC1.c1,2005,0216:30:00,26 ,0.167349,321.5068,24.09655,63.05381
sgpcmbeC1.c1,2005,0217:30:00,25 ,0.120585,66.35751,15.76148,21.36081
sgpcmbeC1.c1,2005,0218:30:00,26 ,0.147284,311.3542,39.53242,81.16406
sgpcmbeC1.c1,2005,0219:30:00,25 ,       0,225.1955,26.79092, 51.9933
sgpcmbeC1.c1,2005,0220:30:00,25 ,0.034108,101.5053,16.14275,24.89372
sgpcmbeC1.c1,2005,0221:30:00,25 ,       0,207.9006, 21.9831,44.85013
sgpcmbeC1.c1,2005,0222:30:00,23 ,       0,198.9292, 30.6626,59.73786
sgpcmbeC1.c1,2005,0223:30:00,22 ,       0,380.6075,37.05275,91.28958