Microtops Time O3 Std Dev O3 6.78 260.8 3.6 7.02 299.5 1.0 7.98 329.1 1.3 9.00 332.6 4.5 9.98 348.9 4.3 11.03 341.1 6.9 11.32 353.8 3.8 12.13 347.6 3.1 Dobson 10 327 14 343 Sonde integral 11.5 330