datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,12 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 7:30:00,31 ,0.229141,16.41677,6.772664,4.330081
sgpcmbeC1.c1,1999,12 8:30:00,31 ,10.57386, 163.396, 92.1247, 38.2654
sgpcmbeC1.c1,1999,12 9:30:00,31 ,30.82468,304.5224,211.5821,87.67983
sgpcmbeC1.c1,1999,1210:30:00,31 ,49.91975,449.3096,334.0696, 127.514
sgpcmbeC1.c1,1999,1211:30:00,31 ,37.58535,535.1467,412.5572,146.9025
sgpcmbeC1.c1,1999,1212:30:00,31 , 19.5153,565.2995,427.6644,173.0202
sgpcmbeC1.c1,1999,1213:30:00,31 ,23.15435,525.7579,399.3386,163.3855
sgpcmbeC1.c1,1999,1214:30:00,31 ,21.23991,426.6592,319.6746, 133.905
sgpcmbeC1.c1,1999,1215:30:00,31 , 21.1677,292.6595,207.3479,93.28716
sgpcmbeC1.c1,1999,1216:30:00,31 , 4.14523, 122.183,78.02907,37.52867
sgpcmbeC1.c1,1999,1217:30:00,31 ,       0,8.138211,3.253959,2.220123
sgpcmbeC1.c1,1999,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1220:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1221:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1222:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1223:30:00,29 ,       0,       0,       0,       0