datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,0.296703,16.09327,5.634736,4.899097
sgpcmbeC1.c1,1997,12 8:30:00,29 ,11.35541,147.8677,72.60834,45.00756
sgpcmbeC1.c1,1997,12 9:30:00,30 ,27.84882,313.7568,174.5486,104.0446
sgpcmbeC1.c1,1997,1210:30:00,30 ,24.36021,443.4748,254.2342,160.8602
sgpcmbeC1.c1,1997,1211:30:00,29 ,29.70347,523.4771,316.7527,191.6747
sgpcmbeC1.c1,1997,1212:30:00,29 ,42.24327,544.9601,324.0191,205.2314
sgpcmbeC1.c1,1997,1213:30:00,29 ,35.36286,506.2804,295.7843,189.4806
sgpcmbeC1.c1,1997,1214:30:00,29 ,20.00714,428.9536, 232.171,155.0288
sgpcmbeC1.c1,1997,1215:30:00,29 ,11.72275,304.6405,159.4564,107.3208
sgpcmbeC1.c1,1997,1216:30:00,29 ,6.137908, 124.688,63.05304,43.85792
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0,9.528058,3.257031,2.758667
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,       0,       0,       0