datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,30 ,       0,1.502885,0.225713,0.465285
sgpcmbeC1.c1,2003,12 1:30:00,29 ,       0,1.345937,0.082295,0.310416
sgpcmbeC1.c1,2003,12 2:30:00,31 ,       0, 1.29939,0.127441,0.350407
sgpcmbeC1.c1,2003,12 3:30:00,31 ,       0,1.327427,0.074639, 0.29225
sgpcmbeC1.c1,2003,12 4:30:00,31 ,       0,1.043156,0.099104, 0.27816
sgpcmbeC1.c1,2003,12 5:30:00,30 ,       0,1.523422,0.050781,0.278138
sgpcmbeC1.c1,2003,12 6:30:00,30 ,       0,1.519327,0.088148,0.339429
sgpcmbeC1.c1,2003,12 7:30:00,31 ,       0,20.88649,9.475998,5.357252
sgpcmbeC1.c1,2003,12 8:30:00,31 ,9.598064,66.27496,40.96674,14.74971
sgpcmbeC1.c1,2003,12 9:30:00,31 ,5.128351,103.2155,43.37208,19.69392
sgpcmbeC1.c1,2003,1210:30:00,31 ,18.32921,95.19993,43.74717, 20.6172
sgpcmbeC1.c1,2003,1211:30:00,31 ,10.27481,168.4805,47.05747,42.20588
sgpcmbeC1.c1,2003,1212:30:00,31 ,2.333718, 116.421,33.86027,36.47601
sgpcmbeC1.c1,2003,1213:30:00,31 ,4.119803,128.4788,42.46951,34.19321
sgpcmbeC1.c1,2003,1214:30:00,31 ,5.264188,102.4549,39.69093,23.48159
sgpcmbeC1.c1,2003,1215:30:00,31 ,2.474834,108.8409,45.72548,24.49707
sgpcmbeC1.c1,2003,1216:30:00,31 ,2.267668,61.00179,37.61327,17.01923
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,11.11868,4.419703,2.753359
sgpcmbeC1.c1,2003,1218:30:00,30 ,       0,0.775212,0.038782,0.156092
sgpcmbeC1.c1,2003,1219:30:00,29 ,       0,1.255839,0.103264,0.326274
sgpcmbeC1.c1,2003,1220:30:00,29 ,       0,1.584244,0.152942,0.385813
sgpcmbeC1.c1,2003,1221:30:00,28 ,       0,1.303569,0.118626,0.329148
sgpcmbeC1.c1,2003,1222:30:00,28 ,       0,1.495818,0.101622,0.373658
sgpcmbeC1.c1,2003,1223:30:00,29 ,       0,1.197966,0.082532,0.247421