3.某施工區(qū)布設一條閉合水準路線，如下圖所示，已知水準點為BMA，各線段的觀測高差為hi,測站數(shù)為ni。現(xiàn)給出68組數(shù)據(jù)列于下表中，請按學號順序選擇其中的一組，計算三個待定水準點1、2、3的高程。題號已知點(m)觀測高差hi(m)測段測站數(shù)niBMAh1h2h3h4n1n2n3n4144.313+1.224-0.363-0.714-0.108108109237.110+2.445-0.456-1.236-0.7403485318.226+1.236+2.366-1.236-2.34581059444.756+2.366+4.569-3.456-3.458101248556.770+0.236+4.231+1.170-5.6011012144633.441+5.637-1.236-2.456-1.9214987746.119+2.452-0.256-0.569-1.65841098847.115+1.689+0.234+1.456-3.345101289949.777+3.379-1.248-0.697-1.419781041050.117+1.434+2.789-2.456-1.735412851128.715+1.760+2.582-3.133-1.216581071217.117+1.767+2.589-3.126-1.209581071347.769+1.230+0.589+1.258-3.043967101436.156+3.077+4.587-5.239-2.469128971518.467+2.425+4.587-3.569-3.4098109121616.117+3.434+8.897-9.569-2.7347181581714.776+3.662+5.896-8.563-0.967481421827.864+0.105+4.559+4.118-8.7484108121920.776+0.095+4.569+4.128-8.7584108122014.769+7.792+8.564-9.789-6.53310121492128.917+3.567+4.456+1.236-9.2078910152231.406+5.259+1.236-2.369-4.1641291292334.169+4.126+2.369-2.258-4.205881082426.797+4.237-0.123-2.258-1.869108772556.779+1.892+1.258+4.596-7.748679102644.116+7.719-2.456+1.456-6.7521289132756.719+6.719+4.569-8.412-2.8391091482866.124+2.876+4.589-1.258-6.242887102922.156+4.207+3.587+1.254-9.074988143022.189+9.039-3.213-3.456-2.335128983172.124+3.370+1.258+4.569-9.155789163289.114+9.197-1.258-4.598-3.3091278103371.412+3.341-0.258-1.478-1.6391191083472.114+1.605+4.569-1.236-4.957310833556.947+4.938+4.213-6.214-2.9691098103614.115+1.596-0.236+4.258-5.649341283728.136+5.675-1.266-2.464-1.91359863832.254+3.178+4.586-5.289-2.519129873946.238+8.379+1.176-3.922-5.60148644065.177+4.443+0.267-1.327-3.3451110984155.345+6.706+2.519-0.920-8.27774894274.515+7.812-1.127-2.343-4.31657684382.322+5.516+3.517+0.829-9.838998104418.478+2.348+3.178+1.189-6.72569654531.660+3.368+2.712-3.904-2.13410121374653.723+9.027+3.815-5.624-7.186967104770.915+4.532+2.758-1.652-5.574129874869.547+2.736+1.112+1.323-5.1356108124943.262+8.127+2.875-4.346-6.6181089115029.634+6.435-1.326-1.158-3.921710945145.436+1.224-0.363-0.714-0.1081081095238.233+2.455-0.456-1.236-0.74034855319.349+1.236+2.366-1.236-2.345810595445.879+2.366+4.569-3.456-3.4581012485557.893+0.236+4.231+1.170-5.60110121445634.564+5.637-1.236-2.456-1.92149875747.242+2.452-0.256-0.569-1.658410985848.238+1.689+0.234+1.456-3.3451012895950.900+3.379-1.248-0.697-1.419781046051.240+1.434+2.789-2.456-1.735412856148.917+3.557+4.446+1.226-9.1778910156251.406+9.249+1.226-6.359-4.1541291296354.169+4.136+2.379-2.268-4.215881086436.797+4.207-0.113-2.248-1.859108776546.779+1.882