Table 2

Relationship between boat traffic with ozone forecasts and outdoor attendance

 1
Alert Issued		2
Ozone Forecast		3
Zoo Attendance		4
Observatory Attendance		5
Dodgers Attendance		6
Angels Attendance
Boat traffic (tons/1000)0.00001
[0.00006]		−0.005
[0.004]		−1.082*
[0.504]		−0.352
[0.388]		−0.327
[3.143]		1.748
[2.891]
Maximum temperature0.00588**
[0.00181]		0.859**
[0.129]		−8.083
[14.204]		−11.262
[11.964]		−28.514
[117.318]		−57.273
[85.574]
Minimum temperature0.00581*
[0.00240]		0.820**
[0.170]		−39.151*
[17.875]		10.194
[17.976]		−125.882
[137.068]		74.48
[131.567]
Precipitation0.00011
[0.00040]		−0.001
[0.041]		−73.266**
[18.010]		−21.110**
[7.854]		−53.214*
[22.753]		73.28
[96.141]
Resultant wind speed−0.00469
[0.00275]		−1.045**
[0.201]		−27.986
[21.494]		35.429
[23.632]		−75.297
[167.027]		−111.110
[158.160]
Relative humidity0.00307**
[0.00090]		0.129
[0.084]		−0.986
[7.428]		−10.958
[8.216]		−108.655
[86.961]		−219.546**
[68.625]
Average cloud cover−0.00169
[0.00447]		−0.250
[0.262]		−14.511
[18.942]		−37.436*
[18.547]		86.477
[214.933]		−221.960
[150.598]
SUR joint testχ2(4) = 5.52P–value = 0.238
Dependent variable mean0.08594,2465,46939,57425,696
Observations1,3801,380916837464486

  • Notes:

  • ↵* significant at 5 percent,

  • ↵** significant at 1 percent. All regressions include carbon monoxide, nitrogen dioxide, year-month dummies, day of week dummies, and cubic day trend. The dependent variable in Column 1 is whether a smog alert was issued anywhere in SCAQMD and in Column 2 is the ozone forecast for the SRA where the ports reside. The dependent variables for Columns 3–6 are attendance at the four outdoor facilities. “SUR joint test” is a joint test of the boat traffic coefficient on Zoo, Observatory, Dodgers, and Angels attendance.