datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 5:30:00,31 ,       0,36.55536, 10.1672,8.345195
sgpcmbeC1.c1,2006,05 6:30:00,31 ,4.109343,114.4477, 57.7188, 24.9846
sgpcmbeC1.c1,2006,05 7:30:00,31 ,35.70094,207.6348, 112.722,48.42315
sgpcmbeC1.c1,2006,05 8:30:00,31 , 59.4136,296.2196,151.3524,65.85768
sgpcmbeC1.c1,2006,05 9:30:00,31 ,73.82158,351.5327,185.4095, 93.0182
sgpcmbeC1.c1,2006,0510:30:00,31 ,96.54633,473.8709,222.5392,112.4116
sgpcmbeC1.c1,2006,0511:30:00,31 ,99.50195,590.0385,249.0093, 123.031
sgpcmbeC1.c1,2006,0512:30:00,31 ,101.2244,564.4629,256.5789, 128.122
sgpcmbeC1.c1,2006,0513:30:00,31 ,114.8612,467.4258,267.3641,111.3474
sgpcmbeC1.c1,2006,0514:30:00,31 ,113.6117,467.1017,241.3747,98.59816
sgpcmbeC1.c1,2006,0515:30:00,31 , 76.1016,409.0734,194.1088,78.23581
sgpcmbeC1.c1,2006,0516:30:00,31 ,61.65508,292.1223,   148.6,57.99413
sgpcmbeC1.c1,2006,0517:30:00,31 ,27.91004, 211.138,101.6029,37.98903
sgpcmbeC1.c1,2006,0518:30:00,31 ,13.04485,106.6695,48.71349,19.63224
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0,25.50739,6.972922,5.367242
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0