Retc program for water retention curve and hydraulic properties 

sir I have some issues kindly help me when I use the RETC program I perform steps like the type of problem. retention data only...next, cm, day next, vangenten equation m=1-1/n, no retention data points 14, next a box appear her I select clay. then values appear here theta s 0.38 theta r 0.0068 alpha 0.008 n= 1.09 what is the value Predicted or observed value???????,,,,,,-1 after it i select nural network prediction and % sand ,silt clay and in bottom put values of sand silt clay bulk density value after this i slect predict here some values of Theta s , theta r , alpha and n are apear .kindly tell me about these values mean????????? ......-2 when I press accept . all value for clay is change what is the means of this value????"""""-3 sir tell me what value of theata s, theta r , alpha stage which vlues I will be use for plotting a curve ? 1- value???????,,,,,, OR 2- ????????? ..... OR value 3-????""""" these are some points I can not understand.

Please if you can upload the file in another way because I can't register on the site