10 0 MANUAL OBSERVATION
21 1 CEILOMETER SYSTEM
32 2 INFRARED CAMERA SYSTEM
43 3 MICROWAVE VISUAL CAMERA SYSTEM
54 4 SKY IMAGER SYSTEM
65 5 VIDEO TIME-LAPSED CAMERA SYSTEM
76 6 MICROPULSE LIDAR (MPL) SYSTEM
814 14 OTHERS
915 15 MISSING VALUE
10