datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,       0, 2.99242,1.196926,0.921058
sgpcmbeC1.c1,2004,02 1:30:00,26 ,       0,3.184318,1.134128, 0.95688
sgpcmbeC1.c1,2004,02 2:30:00,26 ,       0, 2.81493,1.241898,0.911523
sgpcmbeC1.c1,2004,02 3:30:00,27 ,       0,2.557505,1.139211,0.909847
sgpcmbeC1.c1,2004,02 4:30:00,25 ,       0,2.533548,1.322933,0.930271
sgpcmbeC1.c1,2004,02 5:30:00,28 ,       0,2.534863,1.184048,0.963947
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,2.636235,1.087371,0.927265
sgpcmbeC1.c1,2004,02 7:30:00,29 ,0.478438,52.45696,16.74268,12.91448
sgpcmbeC1.c1,2004,02 8:30:00,29 ,8.808063,243.9544,123.1848,70.99078
sgpcmbeC1.c1,2004,02 9:30:00,29 ,16.32935,450.0248, 254.128,132.5502
sgpcmbeC1.c1,2004,0210:30:00,29 ,46.87319,619.4414, 397.816, 182.617
sgpcmbeC1.c1,2004,0211:30:00,29 ,59.50296,728.1504,482.7532,218.0579
sgpcmbeC1.c1,2004,0212:30:00,29 ,65.98156,785.1805,533.3861,220.5322
sgpcmbeC1.c1,2004,0213:30:00,29 ,46.65536,761.9437,557.5445,193.5031
sgpcmbeC1.c1,2004,0214:30:00,29 , 24.8286,674.8885,466.2591,172.8217
sgpcmbeC1.c1,2004,0215:30:00,29 ,15.94342,529.4546,354.1981,132.5139
sgpcmbeC1.c1,2004,0216:30:00,29 ,3.126098,341.7776,213.9155,88.26188
sgpcmbeC1.c1,2004,0217:30:00,29 ,0.785777,126.9881,65.47041,33.46232
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,8.251872,1.969474,1.911926
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,2.781714,1.090339,1.035004
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,2.588058,1.015999,0.967892
sgpcmbeC1.c1,2004,0221:30:00,28 ,       0,2.617326,1.037559,0.953166
sgpcmbeC1.c1,2004,0222:30:00,27 ,       0,2.634877, 1.19324,0.923375
sgpcmbeC1.c1,2004,0223:30:00,27 ,       0, 2.83705,1.248033,0.927263