datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,30 ,0.225536,10.44435, 2.82454,3.105203
sgpcmbeC1.c1,1999,01 1:30:00,30 ,0.247662,12.13953,2.429254,2.933416
sgpcmbeC1.c1,1999,01 2:30:00,30 ,0.182257,16.50071,3.355878,3.995321
sgpcmbeC1.c1,1999,01 3:30:00,30 ,0.227836,13.52614,3.085602,3.716572
sgpcmbeC1.c1,1999,01 4:30:00,30 ,0.212231,16.42246,  3.1836,4.354903
sgpcmbeC1.c1,1999,01 5:30:00,31 ,0.176043,10.62542,2.897984,3.178784
sgpcmbeC1.c1,1999,01 6:30:00,31 ,0.240076,26.06689,3.441842,5.369236
sgpcmbeC1.c1,1999,01 7:30:00,30 ,0.188847,16.30929,2.866869,3.794489
sgpcmbeC1.c1,1999,01 8:30:00,30 ,0.252971,17.12966,3.676437,4.826506
sgpcmbeC1.c1,1999,01 9:30:00,31 ,0.367783, 17.9259, 3.57601,4.551308
sgpcmbeC1.c1,1999,0110:30:00,31 ,0.357214,19.99236,3.562492,4.482615
sgpcmbeC1.c1,1999,0111:30:00,31 ,0.284974,18.89039,3.662262,4.260036
sgpcmbeC1.c1,1999,0112:30:00,31 ,0.271432,  17.454,3.958255,4.722863
sgpcmbeC1.c1,1999,0113:30:00,31 ,0.253563,17.22661, 3.64438,4.170454
sgpcmbeC1.c1,1999,0114:30:00,31 ,0.309999,30.80699,4.044053,6.556365
sgpcmbeC1.c1,1999,0115:30:00,31 ,0.253781,10.33437,2.062578,2.610057
sgpcmbeC1.c1,1999,0116:30:00,31 ,0.285633, 20.5661,2.481215,3.987658
sgpcmbeC1.c1,1999,0117:30:00,31 ,0.271144,9.949296,1.703255,1.981501
sgpcmbeC1.c1,1999,0118:30:00,31 ,0.169669,37.19499,3.201387,6.648333
sgpcmbeC1.c1,1999,0119:30:00,31 ,0.198545,22.02002,3.058815,4.528068
sgpcmbeC1.c1,1999,0120:30:00,31 ,0.163306,19.44816,3.617986,5.031746
sgpcmbeC1.c1,1999,0121:30:00,31 ,0.123139,16.11623,3.056119,3.942364
sgpcmbeC1.c1,1999,0122:30:00,31 ,0.204201,22.84032,3.404033,5.235882
sgpcmbeC1.c1,1999,0123:30:00,31 ,0.211282,13.05616,2.728022,3.240716