datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,12 0:30:00,23 ,       0,0.001143, 0.00005,0.000238
sgpcmbeC1.c1,1998,12 1:30:00,24 ,       0, 0.00239,  0.0001,0.000488
sgpcmbeC1.c1,1998,12 2:30:00,25 ,       0,0.005715, 0.00046,0.001361
sgpcmbeC1.c1,1998,12 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,12 4:30:00,28 ,       0,0.003206,0.000114,0.000606
sgpcmbeC1.c1,1998,12 5:30:00,28 ,       0, 0.02773, 0.00099,0.005241
sgpcmbeC1.c1,1998,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,12 7:30:00,29 ,0.006455,5.448044,1.542272,1.357015
sgpcmbeC1.c1,1998,12 8:30:00,29 ,0.406601, 34.1547,19.52111,11.92095
sgpcmbeC1.c1,1998,12 9:30:00,29 ,5.971173,90.43201, 43.9167,23.02698
sgpcmbeC1.c1,1998,1210:30:00,28 ,4.531335,125.1311,67.20664,32.46453
sgpcmbeC1.c1,1998,1211:30:00,29 ,8.200784,107.5891,76.09221,36.39561
sgpcmbeC1.c1,1998,1212:30:00,28 ,4.819057,119.5893,86.59393,37.38161
sgpcmbeC1.c1,1998,1213:30:00,27 ,3.786996,129.7775,79.35842, 37.4271
sgpcmbeC1.c1,1998,1214:30:00,27 ,3.838473,91.69828,64.47488,31.42085
sgpcmbeC1.c1,1998,1215:30:00,26 ,3.309673,71.57101,45.80984,19.67732
sgpcmbeC1.c1,1998,1216:30:00,27 ,1.891942, 43.6411, 18.6318, 9.16254
sgpcmbeC1.c1,1998,1217:30:00,27 ,       0,1.644565,0.395437,0.424225
sgpcmbeC1.c1,1998,1218:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1219:30:00,26 ,       0,0.000104,3.994E-6, 0.00002
sgpcmbeC1.c1,1998,1220:30:00,25 ,       0,0.024799,0.001082,0.004961
sgpcmbeC1.c1,1998,1221:30:00,26 ,       0,0.001143,0.000068,0.000251
sgpcmbeC1.c1,1998,1222:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1223:30:00,25 ,       0,0.054329,0.002215,0.010858