datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,02 0:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 1:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 2:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 3:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 5:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 7:30:00,28 ,       0,39.62745,12.12153,10.58812
sgpcmbeC1.c1,2001,02 8:30:00,28 ,7.789196,245.2508,91.56079, 69.5975
sgpcmbeC1.c1,2001,02 9:30:00,28 ,29.92452,419.3063,191.9356,134.1371
sgpcmbeC1.c1,2001,0210:30:00,28 ,13.03366,554.7048,299.2234,182.6265
sgpcmbeC1.c1,2001,0211:30:00,28 ,18.90863,655.9648,358.5629,225.1817
sgpcmbeC1.c1,2001,0212:30:00,28 ,39.06391,725.3156,372.9663,239.6005
sgpcmbeC1.c1,2001,0213:30:00,28 ,11.58175,709.5256, 376.494,246.1089
sgpcmbeC1.c1,2001,0214:30:00,28 ,17.37366,639.6908,357.3147,224.4244
sgpcmbeC1.c1,2001,0215:30:00,28 ,19.42145,518.2156,275.9234,172.1949
sgpcmbeC1.c1,2001,0216:30:00,28 ,13.38078, 328.129,166.0308,106.7605
sgpcmbeC1.c1,2001,0217:30:00,28 ,5.093622,119.7839,50.06278,34.23393
sgpcmbeC1.c1,2001,0218:30:00,28 ,       0,5.415426, 1.15575,1.591732
sgpcmbeC1.c1,2001,0219:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0220:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0221:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0222:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0223:30:00,19 ,       0,0.152801,0.008042,0.035055