请阅读下面这张Markdown格式的表格并回答问题。同一行中不同列的单元格用'|'分隔，不同行的单元格用'
'分隔。

表格:
| 公司代码 | 公司名称 | 1月准点率 | 2月准点率 | 3月准点率 | 4月准点率 | 5月准点率 | 6月准点率 | 7月准点率 | 8月准点率 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| CZ | 中国南方航空 | 0.814887945503 | 0.707692611382 | 0.81 | 0.761018660354 | 0.693708844089 | 0.704459760795 | 0.689764065336 | 0.70076064373 |
| MU | 中国东方航空 | 0.808386735836 | 0.705829168446 | 0.77 | 0.713165061171 | 0.722438785276 | 0.691450732406 | 0.644659480647 | 0.644719258003 |
| CA | 中国国际航空 | 0.879686200788 | 0.791037578366 | 0.83 | 0.797510962881 | 0.782547846471 | 0.701459115862 | 0.653028779079 | 0.728626673911 |
| HU | 海南航空 | 0.781824848744 | 0.606653262658 | 0.75 | 0.735533903361 | 0.680994193457 | 0.684042947057 | 0.663956074507 | 0.69653197996 |
| ZH | 深圳航空 | 0.769514635977 | 0.618146293809 | 0.73 | 0.661724198558 | 0.540863232046 | 0.567432326521 | 0.542866164939 | 0.57558592735 |
| MF | 厦门航空 | 0.743956586088 | 0.586460890915 | 0.66 | 0.572221536943 | 0.618457665297 | 0.550501209817 | 0.513655336911 | 0.493377680109 |
| 3U | 四川航空 | 0.830988093397 | 0.784746450304 | 0.83 | 0.754719842293 | 0.778304821151 | 0.70095867236 | 0.680632749038 | 0.695612237688 |
| SC | 山东航空 | 0.854276563677 | 0.722216753617 | 0.8 | 0.792919745661 | 0.786124651811 | 0.782541133455 | 0.757029560202 | 0.70353602373 |
| GS | 天津航空 | 0.757746478873 | 0.713204618221 | 0.78 | 0.778181084896 | 0.812665175849 | 0.785511074985 | 0.732313231323 | 0.712229603134 |
| JD | 首都航空 | 0.740752253652 | 0.507347484043 | 0.64 | 0.593695014663 | 0.621021021021 | 0.647544816836 | 0.587213891081 | 0.614378254795 |
| FM | 上海航空 | 0.825500081314 | 0.675974225222 | 0.72 | 0.636521044219 | 0.623690337602 | 0.587709497207 | 0.588235294118 | 0.599258867125 |
| 9C | 春秋航空 | 0.778157644824 | 0.672607128554 | 0.73 | 0.657919547454 | 0.634309294557 | 0.603653530378 | 0.566960273234 | 0.577462320365 |
| HO | 吉祥航空 | 0.834388603087 | 0.674983867498 | 0.74 | 0.708904704044 | 0.707905064474 | 0.640462208752 | 0.670510429032 | 0.675145819831 |
| KN | 中国联合航空 | 0.782338021674 | 0.749696822702 | 0.7 | 0.726467065868 | 0.630420130308 | 0.650532184491 | 0.365061378659 | 0.447673237147 |
| 8L | 祥鹏航空 | 0.729005901044 | 0.675509756632 | 0.74 | 0.709449325048 | 0.75818419904 | 0.727251240841 | 0.683569979716 | 0.626695929769 |
| G5 | 华夏航空 | 0.657624875951 | 0.677740863787 | 0.74 | 0.72758267985 | 0.735478359909 | 0.742969458724 | 0.617352056169 | 0.604068469362 |
| BK | 奥凯航空 | 0.815296731196 | 0.744429439568 | 0.77 | 0.778957227599 | 0.797518159806 | 0.782646295762 | 0.768383447455 | 0.773207654956 |
| PN | 西部航空 | 0.765646258503 | 0.656737097333 | 0.76 | 0.6586846543 | 0.707541191381 | 0.641776633408 | 0.562875966772 | 0.595668859649 |
| EU | 成都航空 | 0.803488786045 | 0.722787193974 | 0.79 | 0.72010178117 | 0.730316409124 | 0.637366818874 | 0.692702980473 | 0.737665872746 |
| KY | 昆明航空 | 0.747838616715 | 0.766584766585 | 0.81 | 0.774667931689 | 0.795849420849 | 0.764900662252 | 0.706982543641 | 0.738499792789 |
| NS | 河北航空 | 0.710510863183 | 0.585152838428 | 0.68 | 0.630601092896 | 0.65096807954 | 0.641632170313 | 0.712137486574 | 0.596516690856 |
| TV | 西藏航空 | 0.783801874163 | 0.801675977654 | 0.8 | 0.728395061728 | 0.807817589577 | 0.642370214997 | 0.695045695046 | 0.626244343891 |
| JR | 幸福航空 | 0.934093789607 | 0.883640552995 | 0.95 | 0.893238434164 | 0.908967391304 | 0.895795246801 | 0.863247863248 | 0.85121602289 |
问题:
帮我查一下国航4月的正点率，我只知道5月份的是已超过0.55了
Answer:
0.797510962881