datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,03 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 4:30:00,31 ,       0,0.074665,0.002849,0.013552
sgpcmbeC1.c1,1998,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 6:30:00,31 ,       0,7.694553,0.831421,1.833423
sgpcmbeC1.c1,1998,03 7:30:00,31 ,0.000968,117.4011,32.56306, 39.4916
sgpcmbeC1.c1,1998,03 8:30:00,31 , 0.00127,316.8777,110.6128,122.3963
sgpcmbeC1.c1,1998,03 9:30:00,31 ,       0,508.0582,202.8794,200.8241
sgpcmbeC1.c1,1998,0310:30:00,31 ,0.176457,657.2724,247.1447,265.8122
sgpcmbeC1.c1,1998,0311:30:00,31 ,0.127731,752.6561,310.0367,316.6969
sgpcmbeC1.c1,1998,0312:30:00,31 ,0.012177, 786.006,352.4823,338.9895
sgpcmbeC1.c1,1998,0313:30:00,31 ,0.095261,754.3348,338.4173,321.3003
sgpcmbeC1.c1,1998,0314:30:00,31 ,0.075569,672.3402,306.6728,291.7133
sgpcmbeC1.c1,1998,0315:30:00,30 ,0.020721,545.0477,246.9382,238.0773
sgpcmbeC1.c1,1998,0316:30:00,31 ,       0,362.5329,155.3074,152.9878
sgpcmbeC1.c1,1998,0317:30:00,31 ,0.007435,161.3096,66.45838,64.71158
sgpcmbeC1.c1,1998,0318:30:00,31 ,       0,27.36191,5.332598,7.353906
sgpcmbeC1.c1,1998,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0322:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0323:30:00,29 ,       0,       0,       0,       0