condition mean min max 4 h after light 175.334433 142.29038 208.378486 8 h after light 269.685056 222.51264 316.857472 12 h after light 203.164598 160.512765 245.816431 4 h after dark 128.6078885 107.72024 149.495537 8 h after dark 96.7332365 75.310768 118.155705 12 h after dark 91.663553 91.663553 91.663553