datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 , 0.39088, 34.4721,4.826699, 7.51128
sgpcmbeC1.c1,1998,02 1:30:00,24 ,0.259936,8.965467,2.512951,2.670451
sgpcmbeC1.c1,1998,02 2:30:00,24 , 0.29354,19.33083,3.755871,5.042608
sgpcmbeC1.c1,1998,02 3:30:00,24 ,0.376233,27.57701,5.920587,8.335436
sgpcmbeC1.c1,1998,02 4:30:00,24 ,0.236937,22.63327,4.682842,5.730855
sgpcmbeC1.c1,1998,02 5:30:00,24 ,0.236865,34.20903,5.386677,9.128696
sgpcmbeC1.c1,1998,02 6:30:00,24 , 0.30754,32.05119,4.647889,6.823492
sgpcmbeC1.c1,1998,02 7:30:00,23 ,0.232097,21.73657,4.552841,5.255488
sgpcmbeC1.c1,1998,02 8:30:00,22 ,0.372873,13.84163,3.798685, 3.81947
sgpcmbeC1.c1,1998,02 9:30:00,22 ,0.796153,12.67369,3.603451,3.362393
sgpcmbeC1.c1,1998,0210:30:00,22 ,0.551772,27.15258,5.405176,6.500548
sgpcmbeC1.c1,1998,0211:30:00,23 ,0.288669,15.54077,4.223079,4.223709
sgpcmbeC1.c1,1998,0212:30:00,23 ,0.351545,21.08646,4.367087,5.444916
sgpcmbeC1.c1,1998,0213:30:00,22 , 0.25259,  17.176,3.731028,4.378207
sgpcmbeC1.c1,1998,0214:30:00,22 ,0.457771,24.03448,5.022415,5.906303
sgpcmbeC1.c1,1998,0215:30:00,23 ,0.414107, 24.0518,4.690821,5.789155
sgpcmbeC1.c1,1998,0216:30:00,23 ,0.424534,24.78399,4.780074,5.532898
sgpcmbeC1.c1,1998,0217:30:00,22 ,0.417046, 21.1651,4.761104,6.782422
sgpcmbeC1.c1,1998,0218:30:00,23 ,0.190121,25.45224, 4.75098,6.033168
sgpcmbeC1.c1,1998,0219:30:00,25 ,0.361153,15.45299,3.068992,4.231391
sgpcmbeC1.c1,1998,0220:30:00,25 , 0.25363,11.60689,2.486652, 2.80166
sgpcmbeC1.c1,1998,0221:30:00,25 ,0.342151,23.12473,4.096346,6.095043
sgpcmbeC1.c1,1998,0222:30:00,25 ,0.325577,22.40399,6.157623,6.892141
sgpcmbeC1.c1,1998,0223:30:00,25 ,0.349628,17.82695,4.572088,5.275085