Precipitable Water Vapor Estimates in the Australian Region from Ground-Based GPS Observations

Table 2

Average differences (mm) between the computed ZPD estimates from GA and USNO for 2011. Note that no GPS data were recorded at ADE1 in 2011.

Site ID	Mean (mm)	STD (mm)	Number of counts
ADE1	—	—	—
ALIC	1.5	3.7	2993
DARW	3.6	4.0	2481
HOB2	0.9	3.8	2340
KARR	1.8	3.0	3186
PERT	0.0	3.7	3259
TIDB	−0.7	3.3	3243
TOW2	1.5	3.8	2350
Average	1.2	3.6	2836