solar cooking day 1

today's the day. the day that my solar cooker showed all his power. the 1st test was from 10:00 to 12:00. it went perfectly nice. the temperature increase of the water is 25 degrees. but the grade 8 student increased 50! i felt there was no hope anymore. but anyway, thank god the teacher didn't believe it. all of it, even mine. she said that getting a 50 degrees increase in malaysia is impossible. for the 2nd test, i got an increase of 14 degrees which is really really low. on the 3rd test, arhh, forget about it. it only increased  5 degrees. it's really cloudy after all. better not take that reading. so the only confirmed test is the 2nd one and we wasted 4 hours. the first piccah is my solar cooker.