datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,0.981872,12.14505,5.080838,2.648682
sgpcmbeC1.c1,1997,12 8:30:00,29 ,3.406236, 32.6372,11.60149,7.345366
sgpcmbeC1.c1,1997,12 9:30:00,30 ,1.703931,60.46714,14.27385,16.33605
sgpcmbeC1.c1,1997,1210:30:00,30 ,1.226893,51.46611,13.54684,14.27751
sgpcmbeC1.c1,1997,1211:30:00,29 ,0.719241,49.26445,16.22239,16.60159
sgpcmbeC1.c1,1997,1212:30:00,29 ,0.473222,53.90087,17.00857,17.61019
sgpcmbeC1.c1,1997,1213:30:00,29 ,  0.6389,63.64468,17.80034,19.15696
sgpcmbeC1.c1,1997,1214:30:00,29 ,0.854167,38.51272,16.83072,12.83811
sgpcmbeC1.c1,1997,1215:30:00,29 ,2.357634,32.06264,12.75768,8.877033
sgpcmbeC1.c1,1997,1216:30:00,29 ,2.790914,27.55848,9.789255,6.552404
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0,6.255345,3.396375,2.085977
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,       0,       0,       0