datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,12 0:30:00,30 ,       0,0.181178, 0.01149,0.040209
sgpcmbeC1.c1,1999,12 1:30:00,29 ,       0,0.006914,0.000434, 0.00163
sgpcmbeC1.c1,1999,12 2:30:00,30 ,       0,0.336287,0.014287,  0.0616
sgpcmbeC1.c1,1999,12 3:30:00,29 ,       0,0.351351,0.012116,0.065244
sgpcmbeC1.c1,1999,12 4:30:00,30 ,       0,0.114818,0.007876,0.025784
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 ,1.064015, 16.6835, 7.08182,4.270653
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 ,21.21177,292.6595,207.3493,93.28423
sgpcmbeC1.c1,1999,1216:30:00,31 ,5.180938, 122.183,78.07344,37.44097
sgpcmbeC1.c1,1999,1217:30:00,31 , 0.18258,8.411788, 3.53132,2.203921
sgpcmbeC1.c1,1999,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1219:30:00,31 ,       0,0.030169,0.001994,0.006259
sgpcmbeC1.c1,1999,1220:30:00,30 ,       0,0.095696,0.007719,0.023944
sgpcmbeC1.c1,1999,1221:30:00,31 ,       0,0.025966,0.001412,0.004982
sgpcmbeC1.c1,1999,1222:30:00,31 ,       0,0.103403,0.008997,0.026384
sgpcmbeC1.c1,1999,1223:30:00,29 ,       0,0.046471,0.001838, 0.00862