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| hour of observation | |||
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观测时 : 68 phrases in 14 subjects |
| Agriculture | 7 |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 1 |
| Construction | 1 |
| Desert science | 3 |
| Earth sciences | 3 |
| Electronics | 2 |
| Engineering geology | 1 |
| Forestry | 1 |
| General | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 41 |
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