datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,12 0:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 1:30:00,26 ,       0,0.426725,0.016412,0.083688
sgpcmbeC1.c1,2002,12 2:30:00,25 ,       0,1.632315, 0.09731,0.357563
sgpcmbeC1.c1,2002,12 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 6:30:00,31 ,       0,0.556694,0.017958,0.099985
sgpcmbeC1.c1,2002,12 7:30:00,31 ,       0, 23.3212, 7.69327,5.452863
sgpcmbeC1.c1,2002,12 8:30:00,31 ,1.697318,87.88184,37.93644, 23.0544
sgpcmbeC1.c1,2002,12 9:30:00,31 ,2.472975,90.34683,42.00921,22.74988
sgpcmbeC1.c1,2002,1210:30:00,31 ,6.317066,148.9803,36.36724,25.63411
sgpcmbeC1.c1,2002,1211:30:00,31 , 10.2732,172.1456,30.89996,30.44901
sgpcmbeC1.c1,2002,1212:30:00,31 ,2.373653,174.7418,36.20311,42.24453
sgpcmbeC1.c1,2002,1213:30:00,31 ,5.238854,94.94456,36.18166,25.75419
sgpcmbeC1.c1,2002,1214:30:00,31 ,5.933617,113.2345,42.72657,23.31089
sgpcmbeC1.c1,2002,1215:30:00,31 ,3.035251, 83.4482,39.83404,19.75548
sgpcmbeC1.c1,2002,1216:30:00,31 ,4.407511,61.93118,33.67011,17.17905
sgpcmbeC1.c1,2002,1217:30:00,31 ,       0,13.04715, 5.20283,4.020955
sgpcmbeC1.c1,2002,1218:30:00,31 ,       0,1.642038,0.159716, 0.44799
sgpcmbeC1.c1,2002,1219:30:00,31 ,       0,1.091873,0.035222,0.196106
sgpcmbeC1.c1,2002,1220:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1221:30:00,29 ,       0,1.641774,0.132596,0.429879
sgpcmbeC1.c1,2002,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1223:30:00,27 ,       0,       0,       0,       0