datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 2:30:00,28 ,       0,0.201764,0.007206, 0.03813
sgpcmbeC1.c1,2005,02 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,02 7:30:00,28 ,       0, 13.4881,5.138973,4.369992
sgpcmbeC1.c1,2005,02 8:30:00,28 ,1.844048,51.17207,23.56311,17.07996
sgpcmbeC1.c1,2005,02 9:30:00,28 , 3.08652,88.42995,47.85538, 30.6187
sgpcmbeC1.c1,2005,0210:30:00,28 ,8.218925, 118.944,69.67382, 40.1011
sgpcmbeC1.c1,2005,0211:30:00,28 ,10.15973,133.7112,80.99615,47.72278
sgpcmbeC1.c1,2005,0212:30:00,28 , 12.9797,140.5937,82.33869, 49.9217
sgpcmbeC1.c1,2005,0213:30:00,28 ,11.83034,145.9367,82.04787,51.37273
sgpcmbeC1.c1,2005,0214:30:00,28 ,5.930104,123.6682,  67.828,44.60213
sgpcmbeC1.c1,2005,0215:30:00,28 ,4.377733,99.44018,53.17314,33.44434
sgpcmbeC1.c1,2005,0216:30:00,28 , 2.81531,71.86705,32.89647,23.13301
sgpcmbeC1.c1,2005,0217:30:00,27 ,0.131839, 34.4811,12.51518,9.449993
sgpcmbeC1.c1,2005,0218:30:00,27 ,       0,3.028579,0.235791,0.627244
sgpcmbeC1.c1,2005,0219:30:00,28 ,       0,0.010859,0.000388,0.002052
sgpcmbeC1.c1,2005,0220:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0221:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0222:30:00,28 ,       0,0.011453,0.000409,0.002164
sgpcmbeC1.c1,2005,0223:30:00,28 ,       0,0.195705,0.006989,0.036985