datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 7:30:00,31 ,       0,4.717731,1.488606,1.227164
sgpcmbeC1.c1,2001,12 8:30:00,31 ,0.046039,38.37667,21.53267,12.35086
sgpcmbeC1.c1,2001,12 9:30:00,30 ,2.211309,76.54031,49.46293,20.48228
sgpcmbeC1.c1,2001,1210:30:00,31 ,3.301167,101.6939,68.58231,29.22373
sgpcmbeC1.c1,2001,1211:30:00,31 ,4.546844,118.1277,83.36131, 33.2201
sgpcmbeC1.c1,2001,1212:30:00,31 ,4.883091,124.7806,87.28653,35.19181
sgpcmbeC1.c1,2001,1213:30:00,30 ,5.760665,114.9087,80.17652,34.86011
sgpcmbeC1.c1,2001,1214:30:00,31 ,3.695098,97.01878,65.42133,32.02727
sgpcmbeC1.c1,2001,1215:30:00,31 ,3.145337, 67.7538,45.32753,21.86752
sgpcmbeC1.c1,2001,1216:30:00,31 ,0.520671,29.08605,18.56749,8.802652
sgpcmbeC1.c1,2001,1217:30:00,31 ,       0,1.513323,0.497347,0.472054
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,       0,       0,       0