dput of depth data

temp_data

structure(list(depth = c(0, 10, 20, 30, 50, 75, 100, 0, 10, 20, 
30, 50, 75, 100, 0, 10, 20, 30, 50, 75, 100, 0, 10, 20, 30, 50, 
75, 100, 0, 10, 20, 30, 50, 75, 100, 0, 10, 20, 30, 50, 75, 100, 
0, 10, 20, 30, 50, 75, 100, 0, 10, 20, 30, 50, 75, 100, 0, 10, 
20, 30, 50, 75, 100, 0, 10, 20, 30, 50, 75, 100), time = c(1L, 
1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L, 3L, 3L, 
3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 5L, 5L, 5L, 5L, 5L, 
5L, 5L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 
8L, 8L, 8L, 8L, 8L, 8L, 8L, 9L, 9L, 9L, 9L, 9L, 9L, 9L, 10L, 
10L, 10L, 10L, 10L, 10L, 10L), temp = c(0.121490292040404, -0.00597569922857918, 
0.102022133487727, -0.0144913401971553, 0.0493581952053439, 0.103973142033095, 
0.0689431967954244, 0.0999643365278281, 0.00894116060136259, 
0.101765144215152, 0.0431010273486674, 0.0497070694556963, 0.0071165870179832, 
-0.00417498008588329, 0.096204089260228, 0.0428270950049348, 
0.0388081520624794, 0.0451841484281961, 0.0129401023646072, 0.0417433583927955, 
0.0610251465620846, 0.0473874473915659, 0.0297503942963202, 0.0476498201775029, 
0.056831853582222, 0.0705152181147505, 0.0434430127298646, 0.0621971639485974, 
0.041212295720201, 0.0748916233918238, 0.0939321544835828, 0.0516969837658368, 
0.0274930220838953, 0.0260744133483116, 0.0968974946064781, 0.0588957121745944, 
0.046646276055092, 0.123001704804912, 0.0661817512841523, 0.014363019937532, 
-0.00534754489510506, 0.0375005110478532, 0.117165105378915, 
0.0921003172298949, 0.042661477701664, 0.00684273124026321, 0.0629993248569723, 
0.0803681748182029, 0.100177790495152, 0.10686896957284, 0.100498874390904, 
0.0657124678655639, 0.1188869710468, -0.00444686317994818, 0.0565436548050586, 
0.0609663750088252, 0.0205831614093911, 0.0787007236604039, -0.00784081466130353, 
0.00503412382341921, 0.092698230869744, -0.00449226319944672, 
-0.00759400604605488, 0.0264624077482726, 0.026932761407556, 
0.0145993753981479, 0.0464098209777232, 0.016049576112261, 0.0708467816475872, 
0.0499261213212162)), .Names = c("depth", "time", "temp"), row.names = c(1L, 
2L, 3L, 4L, 5L, 6L, 7L, 17L, 18L, 19L, 20L, 21L, 22L, 23L, 33L, 
34L, 35L, 36L, 37L, 38L, 39L, 49L, 50L, 51L, 52L, 53L, 54L, 55L, 
65L, 66L, 67L, 68L, 69L, 70L, 71L, 81L, 82L, 83L, 84L, 85L, 86L, 
87L, 97L, 98L, 99L, 100L, 101L, 102L, 103L, 113L, 114L, 115L, 
116L, 117L, 118L, 119L, 129L, 130L, 131L, 132L, 133L, 134L, 135L, 
145L, 146L, 147L, 148L, 149L, 150L, 151L), class = "data.frame")