datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,31 ,       0,2.309291,0.209878,0.442139
sgpcmbeC1.c1,1998,07 1:30:00,31 ,       0,3.113331,0.220756,0.564988
sgpcmbeC1.c1,1998,07 2:30:00,31 ,       0, 2.12464,0.301523,0.509359
sgpcmbeC1.c1,1998,07 3:30:00,31 ,       0,1.158717,0.271884,0.380148
sgpcmbeC1.c1,1998,07 4:30:00,31 ,       0,1.968459,0.396241,0.516363
sgpcmbeC1.c1,1998,07 5:30:00,31 ,2.105809,20.91567,10.13923,  5.9242
sgpcmbeC1.c1,1998,07 6:30:00,31 , 3.19355,152.1996,92.08821, 49.3861
sgpcmbeC1.c1,1998,07 7:30:00,31 ,10.07255,340.3553,235.4437,114.2018
sgpcmbeC1.c1,1998,07 8:30:00,31 ,46.97486,530.5989,395.3269,162.0131
sgpcmbeC1.c1,1998,07 9:30:00,31 ,97.95113,707.3837,560.0385,192.7312
sgpcmbeC1.c1,1998,0710:30:00,31 ,157.5193,835.3054,713.8179,185.9251
sgpcmbeC1.c1,1998,0711:30:00,31 , 279.039,929.3136,808.7642,156.1878
sgpcmbeC1.c1,1998,0712:30:00,31 ,655.6094,985.3155,894.4981,75.21749
sgpcmbeC1.c1,1998,0713:30:00,31 ,641.2776,973.5004,846.0381,84.70145
sgpcmbeC1.c1,1998,0714:30:00,31 ,347.9325,877.7714,779.1992,109.0191
sgpcmbeC1.c1,1998,0715:30:00,31 , 420.052,735.7733, 636.278, 82.2697
sgpcmbeC1.c1,1998,0716:30:00,31 ,62.68631,576.2394,471.5848,125.7454
sgpcmbeC1.c1,1998,0717:30:00,31 ,19.29095,388.6483,302.9317,83.91657
sgpcmbeC1.c1,1998,0718:30:00,31 , 23.3286,182.9792, 139.722,40.37002
sgpcmbeC1.c1,1998,0719:30:00,31 ,4.175978,35.35194,21.13414,8.518975
sgpcmbeC1.c1,1998,0720:30:00,31 ,       0,0.846416,0.154474,0.213018
sgpcmbeC1.c1,1998,0721:30:00,31 ,       0,0.579431,0.115126,0.170293
sgpcmbeC1.c1,1998,0722:30:00,31 ,       0,1.234926,0.130186,0.260009
sgpcmbeC1.c1,1998,0723:30:00,31 ,       0,0.395621,0.087636,0.126322