datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 1:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 3:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 4:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,02 7:30:00,28 ,1.732997,35.21149,12.20757, 9.01039
sgpcmbeC1.c1,2003,02 8:30:00,28 ,15.30999,177.5434,77.16579,45.36739
sgpcmbeC1.c1,2003,02 9:30:00,28 , 35.7639,342.6181,147.5355,85.43097
sgpcmbeC1.c1,2003,0210:30:00,27 ,39.67385,493.1357,193.0462,124.7657
sgpcmbeC1.c1,2003,0211:30:00,27 ,50.10409,592.1675,226.6593,152.5699
sgpcmbeC1.c1,2003,0212:30:00,26 ,65.27986,552.4117,224.5148,150.2417
sgpcmbeC1.c1,2003,0213:30:00,26 ,53.66535,558.5508, 232.521,162.8433
sgpcmbeC1.c1,2003,0214:30:00,28 ,60.50825,498.5428,234.7976,140.6411
sgpcmbeC1.c1,2003,0215:30:00,28 ,43.72746,393.1483,178.3008,106.3577
sgpcmbeC1.c1,2003,0216:30:00,28 ,  20.325,217.5001,98.94229,  61.534
sgpcmbeC1.c1,2003,0217:30:00,28 ,5.230575,83.96794, 36.4508,21.79948
sgpcmbeC1.c1,2003,0218:30:00,28 ,       0,4.711621,1.302408,1.566388
sgpcmbeC1.c1,2003,0219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0222:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0223:30:00,22 ,       0,       0,       0,       0